Why is moving so hard?

What is it about moving that is so difficult? I love to travel, I love to be in new places. When I lived super lean, moving wasn't that physically difficult. Yet moving is so tremendously emotionally taxing. Why does it have to be this way? When we moved the last time, we moved to a spot that was very different from most of the places I'd lived before, but primarily in the attitude of the locals. It was also a physically difficult move, traveling thousands of miles in a week; changing climate and habitat. The result was a very hard move and a long acclimation period. This time, the move should have been so easy. SHOULD have. I like the people I work with, I love my job, and yet I still feel a little bit of an outsider. We don't have a concrete place to live yet, though we are working on it. All these things will resolve themselves, and yet, right now, life is unpleasant. Does it have to be this way? Is this in the nature of the act of moving? No. I submit that there have been very dramatic moves in my past which did not render this same fish-out-of-water loneliness. I don't believe this is inexplicable or random, this is certainly the result of very specific circumstances and choices, some of which I myself made. No less unpleasant, though. Can't wait for it to pass.