Bitcoin and fiat aren't comparable. One can't be better than the other. We have to use fiat for our daily needs, so we can't live without it.
I value Bitcoin more than fiat money.
I have a lot of inflation in my country now. The national currency is depreciating.
https://www.statbureau.org/en/russia/inflationBitcoin in the future will cost $ 15,000 ($ 20,000, $ 30,000, $ 40,000), etc.
The national currency will depreciate. Bitcoin is the future. Bitcoin is hope. Fiat money is more liquid. This is their advantage.
However, Bitcoin is a more valuable currency for me. This is the best money.