But, * LynneB59*, swearing at people can be terribly wounding and hurtful. Surely it depends upon the context in which these words are used? If it's just to let off steam, when, for example, you've dropped something on your toe or whatever, or you're frustrated about something, that's different than if you use the words to be deliberately insulting to someone.
That aside, though, I still think that swearing in everyday conversation is pretty awful and demonstrates a poor general vocabulary by the speaker when communicating with others if everything they say us littered with vulgarities. I don't think that's being precious, either!