Bitcoin still exists even without fiat, Satoshi Nakamoto created bitcoin not to replace fiat, the use of bitcoin can be an asset in the future with bitcoin can be exchanged for gold not necessarily with fiat so bitcoin does not depend on fiat.
So true. Bitcoin will continue to exist without fiat. In the future I think fiat will be useless. Technology is advancing, people will get used to owning digital currency because it is more flexible, secure, and more profitable to store it.
Yes, that's right, this is our hope, namely changing the fiat transaction system that has many rules, with the presence of bitcoin, all transactions are simple, fast, and of course more secure because we can fully control it.