AllAtOnce: I agree that you are in the right place here in this forum, and I applaud your decision to participate!
As for SC and nudity- I think there are people who would agree with your position even if they didn't have PTSD. Christianity would certainly (if observed closely) frown on reveling in those 2 things, and as a Buddhist I try to abide by the Five Mindfulness Trainings- among which one addresses appropriate S behavior and another which pledges to refrain from certain unhealthy media images.
While you might benefit to desensitization, whether you do or not I believe it is possible to find a man who avoids SC and nudity for whatever reason(s) he might have. It's just difficult in this SC and nudity obsessed society.