Unfortunately, bitcoin maximalists and such refuse to accept that there are still many things wrong with Bitcoin and crypto ... Many! There is no real usecase for cryptos yet just like you said.

It's very ironic that we call it cryptocurrency but it is not a currency at all especially bitcoin... How can it be with all the volatility? After getting a few rich and many poor? The fact is cryptos have become an speculative asset which (yet) don't have any practical use yet... Unless the market cap increases to over +2 trillion and cryptos become less speculative we cannot see them functioning as currencies at least in my opinion.