Bitcoin strongest longterm value is decentralization and scarcity. The fact that no one can print more of bitcoin or even have control over the network is what makes it different from ordinary money.
 
Security and utility is also important but it’s the combination of these things that gives bitcoin strong foundation. Bitcoin isn’t a fast money scheme, it’s a long term financial system that people uses to preserve value and reduce dependence on traditional financial system.

All of the above gives Bitcoin it's standard value. All of these virtues you mentioned gives bitcoin its top-notch value and is one of the reason people across the world have seen Bitcoin as an avenue to which they can invest their hard earned resource into, and this became extraordinary because a lot of persons were giving referral results to what they experience upon investing in Bitcoin over the years and naturally bitcoin had to advertise itself without paying a dime to advert companies, the reputation it has gives it an added advantage, people want to invest in what they can trust.

Its giving us financial control and freedom that we never experienced from fiat. That build us to be more disciplined and patient, financially and psychologically, despite of its extreme volatility that others see it as a threat while some are seeing it as a real asset for bitcoin.

And the fact that until now bitcoin is still kicking alive in the market, despite of non-stop attacks from different critics, that makes bitcoin so valuable for long term.

Bitcoin has 21 million supply.

Bro, you are confusing illiquidity and shortage with scarcity. Because scarcity means limited supply, while a product can be scarce and it can have units available for anyone to buy as much as they want. If someone wants to buy 22 million Bitcoin, can they buy? Nope, that's because Bitcoin is scarce.

Now you can say, who would buy this much? Maybe someone would but no one can buy 22 million. I hope it explains. Because with this definition of scarcity, you are going to misunderstand what it actually is.

Can't really put the focus away from the price and the main factor of it which is the value.

If there are other factors that can be said as an important feat of it, I think it's about one of its utility and security which is being a hedge against inflation.

US keeps on printing more money and that creates higher inflation and people who are wise to keep their wealth and finds a way to defeat it have understood their assignment.

With bitcoin having a limited supply, it's a good asset for keeps that can be against it.

The ability to hold and send Bitcoin individually without any interference is what give Bitcoin credibility both in the long term and short term basis, we have the ability to hold a scarce commodity like Bitcoin and also being able to transfer it ownership to who ever we want makes Bitcoin long term chase an unavoidable quest for all of us.

Neutrality is the center key to Bitcoin valuable foundamental because the ability of Bitcoin holders to trust in the credibility of Bitcoin decentralized independently verifiable network make the key operational point for it network that make it demands, high and at all time.

My keyboard jump and didn't include IF in the beginning. Thank you.

Not only people will hold Bitcoin based on the Bitcoin price, because in this Bitcoin you can get all kinds of facilities, the person who will use Bitcoin for whatever purpose can use Bitcoin according to that purpose. So we have accepted Bitcoin investment or Bitcoin by looking at Bitcoin holding, transactions, very low transaction costs, time-saving transactions and Bitcoin privacy, security and stability. So I can say that the advantages of Bitcoin are much more than the disadvantages, due to which it is ready to be used by almost all people in the world.

Why need separate what the Bitcoin already offers all together. Decentralization, scarcity, security and privacy. Who has Bitcoin already is enjoying of all this. Dont need choose one characteristic and ignore the others.

The strong decentralization of Bitcoin blockchain and network contribute to another important thing it provides to Bitcoin owners, holders and users: censorship resistance.

Both are important for Bitcoiners because they completely control their bitcoins without risk of losing their bitcoins because of any decision to freeze their bitcoins remotely. No way to freeze bitcoins in a non custodial wallet of a Bitcoiner, no Bitcoin node, no Bitcoin miner, no government can do that remotely without arrest a person and legally seize that person's bitcoins.

No censorship with transactions because there are decentralized nodes, mining pools and a Bitcoin transaction can be confirmed by miners that are from different mining pools and the abundant Bitcoin mempools give Bitcoin users very diversifying chances.