Too Much Profanity In Some Young Adult Fiction

I like to read YA Fiction. Some of the stories have way too much profanity, even more these days than I've noticed before. So much that maybe there should be a rating on the cover. The F-Bomb. I don't like to hear it. I don't like to see it. It seems to me these authors are using this vulgar word and others as fillers. Or maybe they think profanity makes the story more believable? I know there are teens who use bad language, but how about this - don't include it, showing readers there is a better way of communicating.