Who are you comfortable with seeing you naked?
Are you comfortable with your S/O seeing you in your birthday suit? Your family? The same-sex people at your gym? Maybe you’re an exhibitionist and don’t mind anyone (of age) seeing your bare tush?
Has that changed over the course of your adult life? When and why?
I have to say pretty much no one. I’ve never been confident of my looks and puffed up a bit after 50, so I’d just as soon be clothed, alone, or in the dark.