If family weren't a consideration, I'd move to Europe, probably Paris. I have friends who retired there and they really love the ex-pat community in and around the city.
More realistically, I'd move back to the Boston or southern Maine area. It's where I grew up, where my remaining family lives; I still think of it as home. However, this would be greatly dependent on where DD ends up; I'd never want to be too far from her.
In all reality, we'll probably stay here. DH has one of those jobs where he can tinker at it forever, as well as being involved in a company. I don't particularly love where we live, but I'm probably stuck here.