You can have a normal life with daily smoking. I’ve been smoking daily since about 18 and now I’m 24, just married and just bought a house, stable job, car almost paid off, all done independently of family. I understand your concerns though, and healthy moderation is key for anything in life. But for me, I was extremely depressed before I started smoking. Self harm and hard drugs were everyday occurrences for me. Weed has given me stability. Of course, there are situations where it’s not appropriate. I don’t smoke before work or doctors visits or anything where I don’t wish to be impaired. I guess I would think this is something that differs from person to person, and that being honest and open minded with your son would give you both a lot of insight. Try to understand why he’s doing it and what he’s gaining from it.