You're right that our existing digital payment systems are far better than crypto for most transactions, and that crypto (and cold hard cash) dominate black mar

You're right that our existing digital payment systems are far better than crypto for most transactions, and that crypto (and cold hard cash) dominate black market transactions, but there's a really interesting class of transactions that don't fall into either of these groups: stuff that's technically legal, but sketchy enough that no big corporations want to touch them. Crypto is increasingly being used as a digital payment workaround for areas that Visa and MasterCard try to avoid, like pornography and donations to controversial organizations. It's probably just a sliver of overall crypto transactions, but this is very much the use case that justifies the bitcoin-as-a-currency model. Pornography is to Bitcoin as "Linux ISOs" are to BitTorrent.