Well, it must be the time of year for this discussion. I just blogged about it, yesterday.
http://macbitseach.blogspot.com/

I go shirtless in the city but not downtown. I'll go to the park or the beach, BBQs ... just not somepleace where proper shirted attire is the norm.

It seems all kids love to run around naked. When we as kids got too old to do that, we'd run around in nothing but shorts. I think it's an extension of that for some of us. The feeling of freedom wearing a kilt or going shirtless ... it's a reminder of a youthful joy.
It's natural.

I'm taking the sun slowly. A little sun every day and I'll slowly tan. I once shaved my head and got a sunburn and peeled. Talk about itchy!