It ends up being a good measure of a social situation. As soon as I decide I'm around people that might be interesting, I will slowly decrease the child-friendliness of my language. The subtle reactions to the first use of "fuck" tells you a lot about how open-minded people are likely to be.
I can understand being careful in your use of language in corporate environments, simply because -- at least here -- offending the wrong people with colorful expression can easily compromise your employment or promotion opportunities. Granted, I'd say that's not a great environment to work in, but some people don't have quite the flexibility in what they can do or where they can do it in terms of taking or leaving job opportunities.