Bitcoin can be used with more than only two use cases as you mentioned.

Digital currency.
Store of value.
Hedge against inflation.
Financial applications.
More.

Why is Bitcoin Valuable? A Store of Value For The Digital Age
An overview of Bitcoin and its potential use cases.
The bullish case for Bitcoin.

but yes, the point is that btc is a valuable asset because the amount is small, which is only 21,000,000, so it is appropriate that btc will be a good coin because for this simple reason, of course people will see that btc is a good asset.

That’s definitely one of the very first, its source codes, Bitcoin being decentralized and the fact that, Satoshi Nakamoto completely kept his/her/their nature completion of the picture.
You iust get that confi that, ain’t no attack from now where and someone isn’t going to jump on Satoshi Nakamoto someday and be like; how do we reset this or stop that and have everything chattered away or perhaps, revamp for whatever reason there might be.

The idea behind Bitcoin’s creation wasn’t profit oriented but, to make finance much more easier for mankind, that’s why it’s so good.

Bitcoin is such a good coin because it has good code

Bitcoin's code is so good because it is simple and solid. It was released by Satoshi Nakamoto and in its original form, Bitcoin is supposed to survive from its code alone. We do not need to change its code because it is simply a good code and it's well reviewed.


Bitcoin has SegWit to lower transaction fees

SegWit offers us compared to Legacy or nested SegWit really low transaction fees and it will reduce our costs paid for transaction fees a lot.
SegWit transactions are simply smaller in size compared to legacy transactions because all witness data (signatures) is separated from transaction data. As a result, we get a lower fee per transaction vbyte.


Bitcoin’s SegWit offers increased Block Capacity

Bitcoin has a limit of transactions in terms of transaction size for each Block: a limited number of transactions can only be fitted into each Bitcoin block, limiting Bitcoin’s capacity in terms of  transaction size per new block.
SegWit allows more transactions to be fitted into each block. By separating all witness data, SegWit effectively decreases size limits for each transaction and effectively increases Bitcoin’s block size limit, which helps to process more transactions per block.
So, SegWit actively helps to reduce congestion in Bitcoin’s mempool.

Overall, using SegWit addresses will help us to reduce transaction costs, have a better network performance and future-proofing for additional improvements and features for Bitcoin.


Reasons for and against Pos vs. PoW

Quite contrary to PoS, PoW is very hard or almost impossible to compromise. Not so for PoS, where more attack vectors can be found.

For example, PoS can be abused by rich stakers. Many PoS projects have a so-called pre-mining of coins allocated to the team and the team can abuse such pre-mined coins to gain influence about project decisions.
A large pre-mine is making a project centralized in many ways and devs can gain much influence by staking a large amount of PoS coins.
PoW is not having such issues.

A similar problem is called "nothing at stake", where attackers benefit from no cost to stake ETH or similar PoS coins. Should a fork occur, no matter if the fork is a friendly, accidental or a malicious attempt to rewrite history and reverse transactions, it’s a given strategy for any staker to stake on every chain. By doing so, he will get a reward no matter which fork will succeed and he will have no additional cost to do so.
In PoW, such a problem is not happening because PoW always means work (spending electricity) needs to be done. A cost occurs for every miner and he can’t mine on multiple chains because mining of a different chain means an extra cost.


Bitcoin is well reviewed

When Bitcoin was invented, it was set up to be a big security. Hacks should be impossible and get prevented by good code. Bitcoin attracted and still has a very large community of really educated developers.
Bitcoin has a very reliable coder community, where flaws will be detected early before implementation and no risks are being taken. Many much smaller coins have a very flawed code review process.
A large and educated coder community reviewing code during testing times is an important advantage for Bitcoin.

And luckily, it saves us from possible hacks, when hackers are prevented from detecting flaws faster because all flaws are removed before implementation.
We have seen so many hacks, where a flawed code was exploited and people lost money, like for Altcoin cross chain bridges recently or when Terra Luna failed.
Still, people are buying coins from unreliable coders like Tron from Justin Sun or even weaker DeFi coins like Acala Stablecoin from Polkadot’s supplier Web 3.
Unfortunately, some people will only learn after a loss.

Some coins are very centralized and have a single point of failure like Solana, when it was down several times or devs have much power like in Binance Coin or Tron.
And DeFi coins can easily print some more coins tokens into existence.
Bitcoin is having a big advantage here.



Bitcoin has PoW

It is big controversy for a long time, if a coin makes PoW or PoS, like it was for Ethereum [ETH]. Not for Bitcoin because Bitcoin developers have decided PoW is best because of security. From what Experts have said so far, PoW is very hard or almost impossible to compromise instead of PoS, where more attack vectors can be found. Like Corona, we should trust majority of experts who have education and experience in an issue. Satoshi implemented PoW not PoS because Satoshi knew. He was very experienced and called it right.
PoS can be abused by rich stakers and makes a project centralized in many ways like premined coins and devs can create much influence by staking a large amount of PoS coins. PoW is not having such issues.


Security is Bitcoin’s priority

As for a safe cryptocurrency, security standards are very important. First point, we need security standards and Satoshi implemented it right himself, when he developed Bitcoin. Early Bitcoin developers added more security standards. Second point is after some time, to NOT remove such security standards. First point and especially second point are relevant to many Altcoins, which is a big issue for Altcoins.
Many Altcoins don’t offer anymore to create private and public keys to prove ownership of funds and access it. It is very concerning and seems mind blowing to many experienced coders.
For example, when creating a Solana wallet or similar new Altcoins. Altcoin developers are not focusing on security.
Or even MEW is bitching around more and more every time going away by implementing insecure patches. We need to have our private key offline.
Many Altcoins are leaving people vulnerable which is very concerning.
Bitcoin is better like Electrum for example. Its design is not so nice but Electrum is good tech and recommended by many experts.

Bitcoin is still having very high security standards today because of Bitcoin does not want to build a hype coin, Bitcoin wants to build a safe coin.
It is our duty to select a safe coin instead of an unsafe hype coin.

Thanks for repeating stuff that's being posted a million times on the forum, during the last 5-10 years.
This is a Bitcoin forum, are you trying to convince everyone that Bitcoin is great on a Bitcoin forum? What's the point?
The discussion about Proof-of-Work being superior than Proof-of-Stake is basically over. There's no point trying to convince anyone than PoW is superior than PoS, because we already know that PoW is better than PoS. It's like trying to convince someone that the sun is shining.

Bitcoin is not a valuable asset because the total max supply is just 21 million, that's so wrong, there are alternate digital currencies in this space with 10 million and 5 million max supply and yet they can't do what Bitcoin did, it's not about max supply.

People don't get how big the decentralised in nature of Bitcoin really is, the only thing that comes this close to me is the battle with inflation, it just seem to be the best thing to tackle inflation and I bet that's why every institution want some Bitcoin now, they slept on it for years and now they've woken up.

Now that people are just realising how Big Bitcoin can be, they are moving so fast to buy everything that they can, to me Bitcoin is also a good store of value, I will rather have a lot of money in Bitcoin and have small amount of Fiat in my bank account, mainly for food and bills.

Use cases, utility, practical applications...these are the top factors that determine whether an asset is good or not.

Despite we all know that bitcoin is the solution to the peoples financial economy and they realized such, but the governments are working against what will give us the desired privacy and financial freedom in this modern and developed era.

Should we all assumed our leaders are the detriments to our success and freedom in life or we are just being unfortunate under the rule of those who will not let be, because we all need bitcoin to be free from the challenges of centralized authorities and custodial institutes of our finance and bitcoin is the best alternative out of their control.  

For me, it is a currency/technology that did not promise the world, but is gradually dominating it. Countries with great economic power are already making their reserves, much progress has been made so far and many others will be achieved. Unlike many currencies that promised a lot and delivered nothing.