Seriously, kill the 'language'-part of the R-rating

I'm so tired of movies being rated R just because there is some foul language, I mean, by that age, you've probably heard the most, if not ALL possible swears in English and maybe even use it for a regular friendly conversation with your friends (I personally swear most when I'm writing scripts for my own movie ideas, but sometimes also a pretty good amount when talking with my friends) and I just think it's so stupid that the MPAA thinks "Oh my God, this movie has crude language, some children in Africa will be killed if we don't fix this... MADNESS!"
I mean, it's good at least that pushing the swearing to a NC-17 rating is very impossible (just look at the documentary "*beep*", it was still rated R) but I suggest that they keep the swearing on PG-13 if they feel it's so damn important to rate it.
Swearing does NOT harm anyone and in Sweden we NEVER rate a movie for the swearing, rarely even the sex either. Loosen up your knots, MPAA. Loosen up your knots.
There are after all SO many movies that should be seen by a wide audience, but are rated R just because someone swears a bit. I think it's just so sad.