Even though this is a super old thread, here's my two cents: Whatever your vice may be, all of it is manageable in moderation. When something becomes a day to day habit, then you'll start to see problems. I get drunk probably once every 1-3 weeks depending on what's going on/what my work schedule is like. While that's probably more then most (or maybe not), I still think of it as a manageable amount. However, I have 2 good friends who smoke weed every day and over the course of the last 10 years or so, I've seen a fairly drastic change in them. Both of them at one time were pretty incredible musicians, but over time one in particular has actually lost some of his talent regardless of the fact that he still plays at least 2-3 hours a day. His timing has really been affected. Am I sure it's the chronic weed smoking? Of course not, but it is an interested parallel to see. Smoking weed is definitely less dangerous then drinking or smoking cigarettes by a mile. However, I think there's a bit of a danger in that people seem to think that smoking weed is entirely safe and no long term effects. Anyone's who has ever worked with/knows older people who have smoked weed for 20 years + will be able to tell you there is something that happens to you when you've been exposed to it for that long..... Anyways having said that, I'd rather see a bunch of stoned people running around talking about the dummest shit ever, then a bunch of drunks picking fights or drinking and driving.