So basicly you want more sex in games right ?
Personaly I feel sex shouldn't be in a game unless it has some relevance to the storyline or game , no just put there for the sake of it.
Another issue is that Movies are 1 way entertainment wheras games are generaly more interactive , considering how mentaly ill some people can be the freedom to have interactive sex might have some serious negative effects.
Parental age ratings also do little to keep 18+ games out of the hands of younger kids , it's best we limit the amount of questionable material they have access too.