I didn't say crypto can only be used for nefarious purposes. There are 2: paying/receiving for illicit activity and investing in the demand for illicit activity. Of course, there's kind of the third: speculation/gambling. But that's a kind of circular state of things, so I left it out.

But I do understand there are these (for lack of a better word) vanity uses for crypto: Overstock.com, a couple pizzerias, attendance at crypto events, etc. The total on these, though, probably doesn't exceed my modest personal assets in viable companies.