Agreed. Fitness and proper vitamin levels don't require sunburns, skin cancer, or prematurely aged skin to attain. All of the "macho" men who thumb their noses at skin cancer (or smoking and lung cancer) are usually the ones who have their noses removed when a malignancy is discovered.

The point is we don't know, which is the case with most lifestyle/diet choices that aren't obviously bad in a vast majority of cases, like smoking and overeating.