I know a lot more people who use cryptocurrency as a tool instead of as a venue for fraud.
I also know a lot more people who use cocaine (in any form) recreationally than are addicts.
> most people eventually end up in rehab or dead from an overdose
This is factually false. I think perhaps you are going off of selection set/survivorship bias. A lot of people have smoked crack. A minority of them destroyed their lives as a result.
I'm not sure this comparison holds up.