I'm wondering the same thing. It's not like it's "cool" to swear. In fact, I always feel strange among people who have made the habit of constantly saying the F word in about every sentence. I still keep the literal meaning in mind so it sounds like they want sex with everything and everyone around them all day long.

So unless you're portraying the main character as some stereotypical dudebro American action hero, I don't see reason for much swearing in the dialog of a JJ2 episode.