Apart from scammers/thieves BTC always attracted beggars and the free sh*t army...
There's some real innovative characters within the free sh*t army trying to pry money from others - but there's also the weird and mentally sick ones amongst that group. And I mean the really weird weirdos.

An aspiring psychiatrist with a tolerance for pain could dig pretty deep into these failed and deformed souls. Lots of unique and outstanding study material - and they're live specimen too.