I never understood parents who let their young kids watch rated R movies, play M rated video games, etc. Why? What possible benefit do they get from it? I'll answer that for you. They get no benefit from it. None. I have a degree in early childhood development, and what little research there is about it shows it's actually harmful. The only benefit seems to be to the parents, who get a rush from being the "cool" parent and having their kids like them. Having your ego stroked should not be a parent's top priority. Some parents will say that their kids like the movies/games/shows and that their kids are fine. Well, most kids would like to eat nothing but candy, donuts, and cake too, and they may seem to be fine if they do that. But it will have consequences. You just may not see it right away.