I don’t use real swear words, nor does my husband, and there will never be a point when I think it’s just fine for my kids to swear. (I am partial to dang, rats, and heck.)
Some words are supposed to be offensive and uncivil. That’s what they mean, and they’re meant to offend. I see no point in pretending that words aren’t powerful; they are, and that’s a good thing. Claiming “they’re only words” is just trying to get away with offending someone while refusing to take responsibility for what comes out of your mouth (and mind).