I think a big issue today especially with young people is what they call "self-medicating". I mean let's face it there are more young people today with crappy life's than ever before, parenting is at an all time low and our dodgeball-banning, participation trophy society makes young people blame everything they don't like on someone else.
Psychologists believe teens use drugs to escape the emotional pain in the same way you escaped your physical pain.
It leads to a pattern of everything isn't perfect for me, I don't deserve that, drugs make me feel better, so I take them. Sadly they start down a path where they either realize it's not who they want to be or they need to use more often, and then use stronger and stronger drugs. It is really an epidemic in this country. And everything we are doing is making it worse.