Yeah, I know. Some M rated games I think are fine, like the newest Assasins Creed (Not III but Revelations). Any swearing in that, at least during the actual Assasin parts, is really mild. Like... the "B" word, not the female dog word, but the other one.
Wow that was awkward. Anyway, and then you can turn off blood, which is REALLY cool, and any sexual things there are mild as well, like the Courtesans are the only thing I saw that was bad, besides some mild cleavage on other female characters. So yeah, AC is a cool series.