Now I don't mean don't critise him. If Bieber is doing something stupid or wrong, by all means rail on him until he changes. What I do mean is, Leave the poor kid alone.
The reason child stars grow up to be horrible adults is because of the constant media exposure in their childhoods. They can't get out of the spotlight, so they act out and make sure they get negative coverage. Look at Lindsey Lohan. When she was a child, she was the proverbial girl-next-door. Now look at her.
So please, Leave the poor kid alone.