While swearing is just words and nudity is just being open with who you are, I can't help but get the feeling that we're getting a little too holier-than-thou about our viewpoint. I mean, sure, a lot of people are overly puritanical about the use of swearing and profanity, but it seems like we're taking the "pfft, what's the big fucking deal?" viewpoint just for the sake of being anti-establishment.
As for nudity, well, as multiple people have pointed out, there are practical reasons for not being nude in day-to-day life. And of course, media typically simulates reality, so nudity is just as infrequent. Like with going to the bathroom and other aspects of everyday life, nudity and sex should only be used in media if there's an explicit improvement in quality because of it.