Sometimes a well-placed, well-timed swear word is exactly the right touch (for example, in the movie Paint Your Wagon, the holier-than-thou preacher goes around preaching obnoxiously at everyone, but when he predicts that God will make the town sink into the ground and it does, taking him with it, he lets out a very apropos profanity; if you've seen this movie, you'll know what I mean). Other times, I get the impression that the profanity is there just to be there (if you took the "F" words and other profanities out of The Wolf of Wall Street, it might actually be a reasonable length).
"Oh, you can’t help that," said the Cat: "we’re all mad here. I’m mad. You’re mad."
"How do you know I’m mad?" said Alice.
"You must be," said the Cat, "or you wouldn’t have come here.”
- Lewis Carroll, Alice in Wonderland
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