I have trouble with tanning, as every time I'm in the sun for more than 20 minutes or so, I start to get hives. Not just sun-burn, but those itchy little red bumps that even Benedryl won't calm down. I get the same effect in tanning beds, only faster, due to the 'higher doses' for lack of a better term.
As for the Vitamin D issue, it's been said by doctors all over that a person needs about 5 minutes of sunlight a day. That's all. A person can have all the Vitamin D they need and still be ghostly pale.
Personally, I dislike tans, I think nice pale skin has a very upscale look to it. But then, maybe I'm just stuck in the 15th century where women with tans meant women who worked. Women who were pale were usually pretty high up on the food chain...
Cyanide