Limited vs unlimited, these two financial systems are never the same. Comparing the two systems is to see which option is better, and it is clear that bitcoin is the better choice. One similarity between the two financial systems is that both can be used as a means of payment although until recently many users only used bitcoin as an alternative option.

In the case of investment and value, these two currencies are highly volatile. Fiat seems worse because of its centralization, but bitcoin is not 100% risk free either. Both of these currencies are good while one of them is the best and preferred because of its privacy, security, low fees and decentralization.

It is a fact that bitcoin is very famous crypto coin and is acceptable by many individuals but we also cannot ignore the benefit of fiat currency as we know that in most of the country fiat currency play an important role in countries' economic success.

People often changes the bitcoin currency with fiat currency because bitcoin cannot be directly used for buying something in some areas. For bitcoin Fiat currency is crucial because both are beneficial and we cannot ignore the use cases of one of them so fiat currency cannot be die due to its useful features.

Comparing with the past, I think that, over time, we won't have to think of fiat value for Bitcoin. It will be the same mental process that was when the € was introduced in Europe.
Like, at the beginning it was awkward but with time, we slowly stopped thinking about how much 1€ worth in our local currency of the time. With Bitcoin will happen the same. There will probably be a transition period and in that time span, we will ackonlowdge how much products will worth in Bitcoin sats only!

Yes, fiat money is always subject to inflation
but in my opinion btc will not be affected by inflation because the supply of btc is only 21000000
You compare the past price of BTC $30k and the current price when BTC was $30k.
In my opinion, BTC is not affected by inflation because BTC has a fluctuating nature, so it is possible that in 2025 the price of BTC has the potential to soar, for example, to $ 200 thousand.
so I think we should not overly compare btc with FIAT money because btc and fiat money are different.

An extremist is a bigot, I am not one of them, they could make unnecessary noise which is not mature. Mind you, it's not the work of extremists that got crypto to this level, it's the work of the founder of Bitcoin and the benefits attributed to blockchain technology (sense and creativity). When a problem is solved through a means, people will buy it, it's not by pitching crypto with fiat, it's about smartness in how you deliver it to the consumers.

And for the record, these extremists are only making noise online, most of them have never attracted anyone to crypto, they only like to argue, while the crypto developers, business owners, exchanges and many more created tempting avenues for people to appreciate and adopt crypto the more. Can you see the difference? The attractiveness of crypto and the business models around it are what you have mistaken for extremists' lousiness. It's wisdom and the attractiveness of crypto that is helping the adoption since it has a lot to offer people not the childishness of some extremists that will never contribute something meaningful to the adoption but ti make noise.

What I see above is not a comparison, it's siding one against the other, of which in true practice, everybody knows that we are benefiting from both and they have their pros and cons. Also, it's not about being ashamed, I always tell people to adopt it and will continue to do so. I do everything with crypto now, and like I stated earlier, 100% of my cross-border transactions are crypto aside from trading and holding it.

This means that I love crypto so much and depend on it daily, but will still not be an extremist of it. I know how the two (fiat and crypto) benefit me and I do my best to use them where they could serve me better than each other, not pitching them against each other.

My Bitcoin store is getting bigger each day and I'm planning how to make a business around it, this is smartness.

Fiat may not die along as bitcoin is progressing, the mindset of people towards fiat is only depreciating continually because they are tired of using the same old and traditional means of centralization in their financial economy and they needs change, bitcoin in cryptocurrency is what everyone believed to be the best option to go for in other to stay safe because no other crypto can secure a decentralized network like tgat with bitcoin, not even fiat, everyone want to have control over his holdings and yet make profits, which bitcoin serves both an asset and a digital currency, in the near future to come, bitcoin could have increased more in adoption while more people would have loosed confidence in fiat the more in seeking for an alternative with bitcoin.

Yes, take your investment in a different pocket where you can actually hold it safely for a couple of years or how long you wanted to hold it without taking and selling a fraction of it. Investment(s) is exactly different compared to your own savings, the funds belonged to the latter is where you will get your personal/family needs or for emergency purposes. Just as doing business, like mentioned above, it is exactly not okay to get some funds in it as the funds that are generated in business does have its own direction so that it will expand more.

Taking a portion of it is like taking a brick in your own house, time will come, your house will be destroyed without you knowing it.

I agree, I love bitcoin but to think that there is no risk when investing in it is a mistake, bitcoin is a highly volatile asset and it should be treated as such, without a doubt the profits that it can generate are amazing, if you know what you are doing, but if you do not know what you are doing the losses that it can generate can be amazing as well, so people need to be incredibly careful when approaching this market for the very first time and only do so when they are completely sure they can hold their coins for at least a few years.

It's a known fact that fiat is dying, but to be honest, as long as we continue to value our bitcoin in fiat,  comparing it fiat will never seize, and I agree that keeping all the money in fiat this days is no good decision at all, there are so many challenges the world is facing right now, and will continue eventually, simply because this problems have been since way back, and today, we still have it around, and so will it go into the future - government must print more money  so as to use to proffer solution to some of this problems, but the thing is, the more more of this money is printed, the more it loses value, so indeed, saving in bitcoin is a really wise idea 💡.

Both currencies can't be compared, because their principles are completely different. Bitcoin has limited supply, fiat has infinite supply. Bitcoin is decentralized, while fiat is centralized. It's like comparing apples to oranges: both are fruits, but completely different on every other aspects.

But I understand OP gives a valuable lesson to the forum when he says fiat is losing purchasing power along the decades, while Bitcoin is only getting more traction and strength on the market. So it makes sense to evaluate Bitcoin more than fiat holdings. Avoid holding large chunks of fiat at all costs. Invest it into BTC or any other asset or property which is going to get more valuable within time.