Comment by dyauspitr
I wanted to point out that I’ve seen plenty of people go from smoking massive amounts of cannabis in their 20s to settling into completely cannabis free lives in their 30s onwards. This is probably the large majority of my friend group.
That's good for them. I hope they got away from that without any cognitive impairment. I know two people that went that route, kicked the habit and they are measurably less smart and prone to forget stuff than they were when they started, and that's not just age related decline. To be fair though, they were pretty heavy users.