Deeply unpopular opinion here but I can attest to a few friends that sought help for Marijuana addiction. There is a whole community that's helping people get off of Marijuana: https://www.reddit.com/r/leaves/

I am fine with legalization of many drugs but one has to watch out for excess and lack of moderation. And the stench, I smell Marijuana in my apartment complex and it has sort of ruined a beautiful courtyard. I wish it was not so potent and people really need to be courteous (same with Tobacco).