I turned into a hermit crab!

Someone once said it might be seasonal depression. I don't know, I am not sad or down at all. I just don't want to go anywhere. I just want to be a Hermit Crab! Hard as I try to ignore this natural instinct of mine to crawl in my nice comfy safe place it still happens.
My girlfriends in South Carolina understand what I am talking about. For the last 4 summers I would get a phone call half way through "Where the heck have you been? Did you die? We miss you!" and I'd have to explain that I was fine, nothing exciting was going on, I was just at home playing with my kids. Well, I have a few new friends here in Arizona, but they have never seen me during the summer. I hope they don't drop me as a friend because I disappear for the summer.
I thoroughly enjoy it to be honest with you. It's like a vacation. No schedule, no appointments, nothing! Come this fall when school starts I'll crawl out, dust myself off and continue on with the crazy days I had left behind at the summer beginning. Am I nuts? does anyone else do this?
au revoir, adieu, ciao, till next time...