This post about using naughty words has the usual and predictable comments, but I thought I'd give my take.
People swear, and I'm willing to bet that it's most people. The argument that it's weak or whatever is silly. Stupid people who swear sound stupid regardless of whether or not they drop an F-bomb midstream. If you've truly explored your own value system and morals, wouldn't you ask the question about who designated forbidden words and why?
I certainly don't suggest you just swear whenever and where ever. Professionally, when my co-workers feel like they can swear around me, it's the equivalent of a mate farting in front of you. It says they're comfortable enough in front of you to trust you.