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This is something I've thought as well, an easy example would be abortion - one group thinks that abortion is literally murdering a child, another thinks that it's an inalienable right that a woman has to preform any operation to her own body. There's no way to make both these people happy at the same time.

There are a lot of logistic issues, though, I doubt this will ever happen.

That just sounds like our current system of states

You'd face the small issue that forced migration is practically an act of war in most people's minds.