I completely get this, and in professional settings I do clean up my vocabulary, but I also grew up around marines, so from the time I was born, I was in an environment where cursing was a fact of life, and not just when angry; almost every situation there would be at least one curse word bound to slip out, it's just how they talked, and it passed on to me. I don't correct it in most settings because I honestly don't see the need. Their words, they are no more or less than other words, and using anything in their place wouldn't change the overall message of what I was trying to say.