I was going to sit on the sidelines but I think I've just been 'nudged' to be intellectually 'honest' with myself, and to make a generalised observation about this genre that does make me more than a little uncomforable, and which relates directly to Wendy's view about objectification.While there is some validity to your observations about objectifying the female body, the same could be said of all images of the naked body so I don't think this is a particularly fair comment.
Quite simply, where is the 'equivalent' treatment of males?
I have seen a number of 'themed' exhibitions and articles over the last couple of years that looked to male rather than female forms, (Silvershots springs to mind), but in general?
I am also minded to think back over the various photographic exhibitions (amateur and not amateur ) that I have attended of the last few years and although I have clear memories of submissions involving nudity, I cannot remember any of male subjects.