Gaming isn't good for kids. Large numbers of people have suggested it leads to psychopathic tendencies and a lack of social skills. While that's a matter of agree or disagree, saying gaming is good for kids is a stretch at best, as raising children around made up fantasy worlds is simply going to leave them unprepared for the real world.
As for your point about cartoons, cartoons AREN'T meant for adults. Using that as a serious point for your argument is... troubling.
Um, no? I don't think I've EVER played a game that has a parental control. They have an age label on the box, that's it. I'd heard of Babestation by the age of 10, does that mean it would have been appropriate for me to have access to it?