http://imprimis.hillsdale.edu/marijuana-mental-illness-violence/
(I thought they always told us that pot was non-addictive...)
The classic pot from the 1960s/1970s was not addictive. However I read that today’s pot has much much higher THC levels. So all bets are off now.
Pot isn’t a drug, it’s a religion. Pot users feel the same way about pot extreme Muslims feel about Allah. If you insult it, they will go off on you.