cussing

ok, im not a hard curser, i do what i like to call "diet cussing," you know, the light and easy "bad" words, and that's rarely...but are there some situations that warrant hard cussing from even the most sophisticated, classy status of people? i heard people curse because their vocabulary lacks depth, something like that, but come now, are there just some situations where no other word but a curse word can express the point perfectly, liiiike someone lying on you and getting you fired, ooooor someone spitting in your face? (<<< actually deserves a few blows thrown too) hmmmmmm...just wondering