I have been seeing the progress of cryptocurrency these past few years, and I've been thinking, will it definitely be a replacement for physical money and use crypto as a primary transactions in our everyday life?
Of course it still takes a long time to be able to say that crypto is a substitute for physical money, especially now that the biggest challenge is that there are still many countries that are banned cryptocurrencies, but I'm sure even though cryptocurrencies are very popular, it will never be able to replace Fiat and the government will protect Fiat.
As some have said, that happens if the government finds a way to control bitcoin in the future. While there is currently no way for them to control it, the future is difficult to predict as technology always evolves. But if they controlled it, we wouldn't need it either, because once bitcoin becomes centralized, it's no different from their fiat currency. So I don't expect them to be able to control it, and it doesn't really matter if bitcoin replaces fiat. As long as bitcoin is always decentralized.