Well I don't believe I can prove it. I just listen to and read the language used in films up to about 1960, the language still used in most period pieces, the language used in the great majority of the classic novels written before about 1960 and they just sound better to me than your average R-rated movie dialogue or your basic rap tune.
I guess that is personal opinion but I happen to be right. Don't you agree? Do you really thing that the word motherf***er enhances the language. How about "Go f*** yourself? Or just your basic F You. Just because people use this language doesn't make it good. It's just bad taste and nothing more. Use it if you like but not in my house.
ex: Girl walks by myself and my mother: I say 1) What a nice ass. 2) What a nice butt. Neither are very appropriate),
but in a comedic, political satire? My point wasn't that things can't be said in bad tastes but the word itself isn't any worse than any of the other dozens of meaning for that word. (sex isn't a 'bad' word, but there isn't a dimes worth of difference between I'd like to sex her up or I'd like to f*ck her up; neither are appropriate in very many situations)