What is it with these young stars?

Is it so bad being famous? Bad enough to do things that are detrimental to their health? I know that I can't even begin to imagine what it's like to be watched everywhere you go. Or to be criticized for every little thing that you do. That has to be hard. But, they are not making it better by doing drugs or drinking/partying to excess. They are not only giving their critics more ammunition, but they are ruining their lives. They could possibly be shortening their lives by many many years. It's very sad. I've lost count of the number or young celebrities who have gone to rehad in the past few years. I just hope that the alcohol and drug rehabilitation works for these troubled kids.