Swearing definitley has it's place, and I think that the idea that it's something unsavory or unsophisticated is a rather elitist attitude on the whole thing.
Not to quote the same person who I quoted for my signature, but this pretty much sums it up:
Under certain circumstances, profanity provides a relief denied even to prayer. - Mark Twain
I don't think I could trust someone who merely says "ouch!" upon squashing thier finger with a hammer, or who refrains from calling the biggest assholes out there what they really are. Words exist for a reason- there's no reason not to use them.