Why do teenagers these days use drugs and alcohol?

Why do people speed when they drive?
Why do adults smoke when they know it is bad for them?
Why do birds insist on making a mess on my car?

Narrowing it down to asking why teens do something doesn't really tackle the issue of why people use or abuse things. Teens are usually victims of peer pressure but that is just an excuse for some. There may be some that see it at home and think that it's ok to get drunk or do drugs because their so called role models do it.

Kids from every generation drank and used drugs but it wasn't until the 60's that it came out into the public when everyone was doing something to rebel.