So cryptocurrency is dead, right? After some brief interest around the middle 2010s, where some vendors actually did accept it, they seem to have all revoked their support for it. All that it seems to be used for now is scams, ransomware, and pump-and-dump schemes.
Don't forget anonymous payments. Lots of vendors selling legally questionable (or illegal) things only take cryptocurrencies. I see that as a huge boon for these industries, who would otherwise have to figure out credit card processing, bank transfers, or being repeatedly shut down by Paypal/Venmo/etc.
The problem is that for every successful weed and nudes sale there's a million ransomware attacks, scam calls, and absolutely fraudulent "investments".