That is a straw man. This is not my definition of crime, I was thinking things like money laundering, tax evasion, ransomware payments, and blackmarket purchase

That is a straw man. This is not my definition of crime, I was thinking things like money laundering, tax evasion, ransomware payments, and blackmarket purchases. I'm genuinely not sure what a use case for unregulated financial activity would be that doesn't fall into those buckets. Someone mentioned retaining assets in countries with hyperinflation. To me it appears a central bank digital currency would be more appropriate there.