Obviously, if you're writing for Family Circle, you're not going to pepper your story about getting your child to give up his pacifier with f-bombs (although that might do something to change the readership.) But if you're working for different publications or just writing for yourself, is using profanity a way to express yourself, or are you just limiting yourself? I don't gosh-darn know. See what other writers have to say on the subject on a Profanity forum over at Writers Digest.