sometimes we idolize this people, but in reality they are human just like everyone else. The lack of guidance, the bad influence and the flexibility of getting everything easy can make just anyone become spoil. They get too much attention too fast, and just like everyone else in Hollywood, one day you are the star, the other day you are old news. These teens don't understand why they are very popular one day and then they are not so they do stupid things to keep being popular.
Because we all do questionable things growing up. They just have people with cameras waiting to catch them at it. They're also exposed to questionable opportunities due to their fame, fortune and social pressure.