Also, a lot of people consume drugs and alcohol to lower their inhibition and really have a good time; it works but there are also plenty of enjoyable alternative "sober activities" that won't result in a total blackout and waking up in a strange place.
In addition, where we draw the line between what's legal and not is quite arbitrary in my opinion; the whole debate about legalizing stuff like marijuana gets quite ridiculous because if anything, alcohol does more damage to the body. So there you go, that's my two cents on drugs and booze.