Why do some people freak out over nudity?

My last post elicited some rather vitriolic responses from a few people regarding my going out in public naked. It strikes me as odd that someone would become so apoplectic as to threaten me. Apparently, since I'm kinda thin, I should be ashamed of my body. Why should I (or anyone else) be ashamed of their bodies? If there is a god that created us and told us to be ashamed and scared of our given forms, then that deity is has a warped sense of humor. We only get one shot at being alive, and I refuse to hide or be ashamed of my nakedness. Nobody should have to go through life feeling that being naked is dirty, nasty or perverted. Life is to short to bear the burden of this nonsense.