Every four years I let my Dermatologist buddy scope out my skin with his special lights and magic glasses. He doesn't miss a single square centimeter of it, scalp to anus to the bottoms of my graceful feet. I'd like to avoid death by melanoma, if possible. Not sure what I want to die from, but I just want it to not be right now.
$175, cash for 1/2 hr. consult (he won't do insurance), including the good conversation and comraderie, plus a pile of samples for my spot of eczema and a little nitrogen zapping of some ancient sun damage to my face.
He knows that I have spent all of the time I could in my life outdoors, usually without hat and never with disgusting sunblock (except maybe on the nose when the Mrs. makes me). When I was at prep school, we termed sunshine "catching bennies," ie the beneficial rays of the sun. Studying Latin or dozing on the lawns.
I have happily spent all the time I can on boats, soccer fields, lacrosse fields, golf courses, tennis courts, tractors, trout streams, skiing, beaches, gardens, and hunting fields since I was a kid.
As he scrutinized my beautiful, well-fed, pasty-white-skinned body, he told me that one problem he has is people with sun phobia. He said people require an hour or two daily of exposure to unblocked sunshine (not sunburn), and that sun phobia (especially with kids covered with hats and sunblock) is a more important health hazard than benign sun-related skin cancers (which are pretty much all easily-curable when found in a timely way).
Our skin produces instantly-bioavailable and natural Vit D, necessary for normal bone growth, vitality, and disease-avoidance (cancer, heart disease, depression, osteoporosis, etc.). In the US, they add Vit D to milk (but only enough to prevent rickets in little kids) and it's far from enough to substitute for wholesome playing in the sunshine.
Sunburn bad (possibly but not definitely associated with melanoma, but definitely associated with wrinkles), but wholesome sunshine (even through clouds) is good for us. Not to mention the reality that a little tan makes us crackers look more attractive.
My dermatologist claims that we evolved to live in the nude, outdoors. Sheesh. I'd try it, but I would get arrested because I do not live in San Francisco - and I would have to fight off the women.