Whats In My Big Question For Me

My big question is something that I thought of because of repeating ads. Its also something I'm concerned about because at school you can walk into a restroom and see people smoking when you just want to get your business done in peace. It's funny to see their faces when they think its security that walked, but really its just student trying to use a restroom that's already disgusting as it is. I don't understand why teenagers smoke because to me they're just causing more problems to the problems they're trying to deal with. I then began to wonder if any of the ads I've seen have made any difference. Has it caused teenagers to quit or at least acknowledge the problem?