Fiat is the one that has given the best financial service for all our needs. If fiat is not there the system will collapse entirely, so fiat will rule the world even when bitcoin and other currencies increase in acceptance.
you are right that at the moment fiat is the best financial system though in the future all the things might easily change, I think that bitcoin will be a national currency in the future.
Nope, fiat is not the financial system ( bad) with centralized system and it makes the fiat currency is very bad system, but it help our community since the old decades. Bitcoin will not become the national currency.
I don't think so. Most of other country's economies rely on fiat fir a long time and i think, with banks and government support, it would be that way for a long time from now. Fiat is flawed that's for sure but it's the most trusted currency that time has proved so people would have to believe in fiat because they would still be using it for a long time