Maybe you're an animal needing a tribe? That's true for me at least.
I too miss the times living on the edge, in cars, in tents, in schoolbuses... the magical times following the Grateful Dead... uh oh i feel another song coming on!
Really I miss that free feeling, nothing to lose cuz I had nothing, no possessions just free falling... But life goes on and you find some peace in security and settling down. And that's really great that you got a lovely lady to share your life with.
So what I try to do when I get restless again, is just daydream about it, I love daydreaming... I think I have such a vivid imagination that I can have a lot of fun just in my head. Wouldn't make sense to really leave... Too many obligations to really just split...