As time goes on, the older and more experienced that students get, the more in control they become. This is why you see people ralphing in the garbage cans of bars, dorms and private residences. Same thing, nearly the same effect. As for drugs, well, there is a certain attraction towards trying real hard to discover what you are really made of. The more intimate you are with how far you can push, twist, stretch and abuse your body, the more in touch with yourself you will be.
Drug use is a means to that end.
Don't mistake that for a license to go buy a bunch of drugs and do them. I'm not recommending that, because anytime you do these things, the essential purpose is to see how close to death you can take yourself and still come back. That is how many people become truly self-aware, although the attempt can kill you if you aren't careful. And that's a fact. People die because they go beyond the limit.