no idea how this got so heavily downvoted. sorry, but most of these people don't actually have a reason for using it. it hasn't been strongly evaluated for psychological use; there are a few physical conditions for which it can make a difference but essentially nobody is using it for that relative to the population size of abusers.

criticize it on twitter as harmful and addictive and a dozen people will pop up, inveigh at you with a score of mean replies, then block you. of course they're not addicted though. weed's not medicine, dude, it's, like, harmless, man.

i'll admit i'm personally biased here in that i know people who have had both temporary and permanent psychological issues from overconsumption and i just generally think depressants/downers are bad things in most cases.