Well JBG, you have to think about who "we" are and where nature expected "us" to live. As the quote goes,"Remember when we were in Africa?" Back then, scientists say we were all black. We didn't wear clothes, and the sun was fierce, so that made sense. Then some of us decided to be European, and there it was so cold that we had to invent clothes. With the clothing and the reduced sun intensity, we developed pale skin in order to make vitamin D. In fact around the world, humans got a whole range of skin tones according to how much sunlight they were receiving. Now you're a northern guy who's moved to the desert and you like to be naked. Is this really what nature intended for you? Obviously it's not immediately fatal ("White man's grave", ha ha) but if I lived in that location, I'd be somewhat cautious.