Well, I definitely think there's a difference between being naked and being "pornographic".. I mean, there are only so many parts on a body that are "sexual"... and most of the parts you see in a dressing room or locker room are parts that you'd see every day on the street.. midriffs, all the way down to the mid-hips.. all the way up to the upper thigh, arms, backs.. it's only a small percentage of that whole picture that gets covered up overall.. but that being said.. it's a bit different to be running around naked then it is to be running around naked and bending over in front of people. I'm completely comfortable with being naked but in all honesty, I don't want to bend over in front of people. If not for the sake of being rude by completely exposing parts that still sexual, even if it is natural.. um.. like, they're just not the "freshest, smell bestest, always sparkling clean" areas. It doesn't really matter how often you wash or shower there, as soon as you potty, that's not really spotless anymore and that's if you discount other things that go on within a woman's body. And heaven forbid you have gas.. yeah, just not polite to point that in someone's direction, no matter how natural you are. I think maybe that crosses over into the area of not polite for other reasons than being naked.
I do feel like I shouldn't bend over and stick my butt in someone's face even when I'm clothed. It's sort of like sticking them in an armpit.... whether it's clean or not, it just doesn't seem polite. And besides.. um, imo, that part of a woman's body isn't very attractive, no matter how comfortable you are with nudity. I never really got why men thought it was so cool to see it, but I guess they're just pre-wired to think that way.