Fiat for daily use.
While bitcoin or cryptocurrency for investment.
It's the embraced use of cryptocurrency today but we have to spend it in the most possible way to enjoy it. I have used it to shop for many times but our society is not yet ready to go all-in with crypto.
I don't see Bitcoin as an embraced currency but yet to be embraced, so many people around the globe are still yet to come to terms with the believe that's a means of exchange, it will take sometime before it becomes a general means of transaction