Many of us or some lucky people? The majority people that were able to hold bitcoin from it early days sold and have left, only few of them remain. The only people I can say they were able to buy Bitcoin cheap were the ones that bought when the price went down during the bear market.
Bitcoin is backed by proof-of-work (PoW) and mathematics (difficult computations), whereas Fiat is backed by faith, propaganda, the government, and printers; one is under control, the other is not. Now choose wisely.
Bitcoin cannot be censored, despite bitcoin ban in China, Bangladesh, Morocco, Algeria etc. their citizens continue to trade and mine BTC.
Every Bitcoin Purchased is a vote for decentralization, now tell me have you voted this moth?
Bitcoin is decentralized in the early days when there is no need to undergo KYC and others but today, the availability of centralized exchanges have added a pinch of salt of centralization into it, you cannot say bitcoin is fully decentralzed today except for people that still practise the old system where they don't use exchanges that require identity verification but it maybe tedious work to sell with caution.