Surely we can hack our language to get across our emotions civilly without resorting to swear words. I appreciate your comment and hope the sentiment you expressed is more widely shared around here.
What exactly is the problem with swear words? He's using a word with the appropriate emotional connotation to express his message. Why hack a system that doesn't work when we already have one that does exactly what we want?
A few well-placed curses can emphasize a point and convey emotion. It's all too easy, though, to use too many expletives, and communicate all emotion and no content.
We should reserve them for the most extreme times so as not to water them down. I think of the language progression as inflation. Until we come up with more-offensive phrases to replace the swear words we have, those words are the emotional cue just below escalation to physical violence.