bad, bad, bad!!!
Why do young people do these stuff?
Because their addicted to this stuff and they want to stop, but they can't. Its a nature all hadit for most people, but people have to get through it some day. Well you can help by telling your friends that do alcohol, drugs, and smoking is bad and they should stop. If they don't stop, then try telling their parents. If they don't care, tell the police. Its better to tell the police than letting someone get lungcancer!!! Even if you swear an oath. Its bad enough if when they started.
Some causes
-Peer presure
-not understanding
-friends
-parents
-addiction (in general)
-stress (many people use smoking to relax)
(I don't know why.)