Screwdriver (cryptos) and drill driver (fiat schema) both can be used to screw. The proponents of screwdrivers are constantly complaining how drill drivers are clumsy, how you can't safely run around with them, etc. But do you really want back the society where you build houses with screwdrivers? Current fiat schema is just so much more than what you think. I assume you didn't study finance or economics, so it might be hard to understand just how many things have been possible because of fiat currencies. Yes, many crisis too, but it put the rate of innovation and growth into steroids. Thanks to it, we now have time to argue in internet about this kind of worthless matters.