credit and debit cards are rate regulated in the EU to a 0.2% maximum fee and moving money between users these days is usually free completely with almost any payment service or bank account. Cryptocurrency fees are significantly more expensive, and process a fraction of the transactions.

The ability to have a monetary policy is a bonus and it's the reason centralized money is price stable. If you were paid your salary in bitcoin on May 1st this year you would've lost 50% of that at the end of the month, good luck paying your rent

In addition to the original crime and legibility discussion as a practical means of transaction crypto is volatile, expensive and slow.