[r00f]

It depends on person. We are (de)motivated by different things.

I was growing up in a neighborhood where most part of people above 14 were using something. Most adults were using something heavy and awful, like heroin or desomorphine or whatever. I grew up watching them every day, and I grew up with insane fear of what chemicals do to human body and brain.

I am 35 today, I have never in my life tried anything, even a cigarette. For me fear works perfectly as a reason to stay away from drugs.

But to be fair, it is self-induced fear, from life lessons and not from school lessons.