Weed is productive, alcohol is destructive. Weed, if you can handle it, expands your creative side, it also mellows you out, helps you sleep, helps you eat, amungst many other things. Alcohol, only allows you to make a fool of yourself - it doesn't help you in any way. The only thing it does, sometimes, is help men last longer in bed - but even then, too much will just kill the "growth." And even then, weed does the same thing, without the possibility of anti-hardness.
Also, alcohol=tool of the government to dumb us up, why do you think it's legal? Don't get me wrong, I don't mind drinking every now and then, especially when I'm feeling like shit - because then I don't care about productivity...I just want to get fucked up. But weed is the better choice, overall.
Peace