Today, knowing both worlds, it is the only currency that I trust, it is the only system that I trust and I will dedicate my life to carry this forward. Bitcoin forever.
But you're still need to use fiat because you can't use Bitcoin to pay anything in your country, so you're still trusting fiat even you're not use it as to store your wealth. We might see a big change when CBDC has been launched by the government, it's either they will ban Bitcoin or they still consider to accept it. But you can still use Bitcoin since there's a way to trade Bitcoin without need a permission from centralized entity, as long as you not make any mistake.
Fiat will not be replaced as currency while bitcoin is only a reserve where they can choose that option, even if we want bitcoin as payment but we cannot refuse fiat it is a very important need for us in our own country.
There are changes later to the CBDC but the government still has control over it whereas there is no prohibition for bitcoin it's just that it's a commodity asset and won't be completely legal in a certain country, so even though we believe in bitcoin in the future I think fiat is still not replaced.