Well, nationality arose to get away from kingdoms and tribal lands. It was actually a move away from race-based territorial control, and toward abstract property licensing, so removing it would cause us to resegregate.

People were only free to move house, alone, because they no longer needed their tribe to define and protect their property. They could just buy the deed to a house wherever and go live in it.

I find that we are losing this national abstraction and everyone is self-sorting, to be around their own "kind". National identity was good for people like me, whose identity isn't easily quantifiable.

Identity is collapsing inward.