How Come Everyone has to hate on these kid celebrities?

I don't know. I just know it's bad and unfair. Maybe it's cause they have alot of attention but then why? Why hate on Miley instead of Tiger Woods? Why hate on Justin Bieber instead of Sandra Bullock? Miley's not a slut...Tiger Woods cheated on his wife and everyone's forgotten about that. Yet Miley's picture (that wasn't even naked) from two years ago is still fresh in everyone's memory!