Why are many celebritie so miserable with Hollywood if they CHOSE that lifestyle/business in the first place?

Some celebrities are forced into to from their parents. These "child stars" are messed up because the celebrity lifestyle changes them and makes them weird. So they turn to drugs and alcohol since they have/can afford everything else. When you know that you have everything you need, you get bored and want more and you are soooo messed up that they turn to drugs. So, that is why. I hope that makes it more clear for you. :)