I think Eminem's response to Will Smith about cussing in music sums it up perfectly.. "Will Smith don't gotta cuss in his raps to sell records, Well I do so f*ck him and f*ck you too". Who cares about swearing really, it's a heavy rock/punk/hardcore album, some swearing will be a nice change of pace.
Here's a perfect example of a song that simply wouldn't have worked without profanity [video=youtube;mTWIvEOPpcM]https://www.youtube.com/watch?v=mTWIvEOPpcM[/video]