Different strokes for different folks. Alcohol makes me obnoxious and loud and I usually regret getting wasted the next morning. Not to mention the hangovers.
Weed just amplifies my already mellow personality and opens my mind to a lot things I wouldn't normally open it to, especially if I was drunk. Listening to music, creating art, playing music, playing video games, going to shows, even just hanging out with friends are all a lot more enjoyable for me when I'm stoned than when I'm drunk. Booze makes my head spin and stirs my thoughts into a mess. There are definitely times when smoking leads to laziness, but only if you let it. You've got a choice when you get high... be lazy or have tons of fun. The choice for me is obvious. When I get drunk, it's a lot harder to control myself and I usually just end up giggling and talking a lot about nothing in particular and belching. Seems a waste. The only downside I've noticed to getting high is that I have perfect thoughts in my head but have trouble explaining them out loud.
I choose weed, others choose drink. Cheers to you and your preference!
Oh, and what Karen said reminded me of something the singer in my last band said once... "Everything in moderation.... including moderation." This goes for any aspect of life, but fits especially well for the topic of this thread.