Swearing salts the language.
I love this and will probably use it at some point in the future, haha.
I can swear like a sailor (when it's not entirely inappropriate to do so, obviously) and take umbrage with the equating of profanity with intelligence. One has nothing to do with the other. Would I drop an F-bomb in my grandfather's eulogy? No. Have I dropped an F-bomb on stage at Comic Con during a panel (I'm a writer and was there to promote a book)? Yup. Have I included profanity in my books? You bet! Does any of this mean I have a limited vocabulary? Nope!
It's all about context. We can grumble about kids these days until the end of time (and probably will) but profanity is an organically occurring subset of any language and the evolution of it from a linguistic perspective is actually pretty fascinating.
In short: I love words. Even the bad ones.