For those who have invested in and used cryptocurrency and bitcoin, it is very clear why bitcoin and other cryptocurrencies are better than traditional money. One thing that can be noticed more in the case of traditional money is that inflation is almost constant because the capacity of this conventional currency is declining to result in purchasing power. Inflation causes the value of money to fall, while the value of cryptocurrencies continues to rise, increasing people's ability to invest in them. On the other hand, in the case of traditional money, it is not possible to protect the privacy of personal assets, which can be protected through cryptocurrencies, especially Bitcoin.
Crypto may be better than Fiat, but it still has a big drawback. And that is lack of mainstream adoption, and high instability. You cannot use crypto as money just like you would with Fiat. As long as these drawbacks exist, Fiat will remain as the dominant force of the world's economy. I wouldn't worry about this since crypto was never meant to replace Fiat. Satoshi only created Bitcoin to serve as an alternative financial system people can recur in times of need. Fiat will never disappear because banks and governments patronize it.
Which currency to choose, will depend on your specific needs. Not everyone will find Bitcoin attractive for daily payments. The same can be said about Fiat. What matters is financial freedom. As long as people have financial freedom, there should be nothing to worry about. Just my opinion