Why shouldn't you have that right?

In a utopian world, we could probably do that. But we have various boundaries and borders, and where we are born matters.

Of course, there are places that don't seem to work like that. Warlords and such, tribal hatreds. But I was referring very specifically to the notion that "my people are from there [however long ago], and so we should be able to move back in regardless of what is there now". There will likely be reasonable exceptions, like fleeing the NAZIs, and then after the war returning. Though don't be surprised if your land belongs to someone else by then. (I believe that happened in this country with Japanese relocation, and I'm not sure they were ever made "whole" again.)

I was more considering the Kurds vs Iraq/Turkey. Or the Jews vs the Brits/Palestinians (people often forget that 100 years ago the Jews were the terrorists...wasn't it Begin who served time in a British prison for terrorist activities?). Then the Jews were given the land, and all their neighbors attacked them (without provocation). Sure, it was a "might makes right" thing (the Allies decreed it, more or less). But the Jews didn't actually do anything. And all of that was because multiple peoples claimed land, and wanted autonomy over whatever land they said was theirs (Kurds, Jews, and I'm sure many others). But in the world in which we live TODAY, do they really have that right? Or are the obligated to work within the society they are in (assuming it is a peaceful society that leaves them alone, not a genocidal one that wants to wipe them out)? Once a society is established, generally speaking, it's going to resist being destroyed.

I think the Babylonians did it right. From what little history I have of that era, they were accepting of the Jewish presence (they did, after all, force them to relocate). They could own land and such. That was also true of the Palestinians until the "settlers" started evicting them in Rabin's time (he stopped it, and was assassinated for his trouble). I'm less familiar with the Kurdish situation, but it seems ridiculous for any group to expect a country to just give up chunks of their land. Not saying it can't happen, but most likely it won't. I doubt the "Nation of Islam" is going to be getting chunks of the Pacific Northwest.

Going forward humans either get along or they stay divided by appearance and/or religion/ and or greed combined with overtones of race/religion/bigotry/arrogance/classissim.

Agreed. The Star Trek vision of the future may still happen, though not within my lifetime. Especially the religion bit. Whether it's Jews saying "god promised us", or Muslims saying "once Muslim land, forever Muslim land", or whatever other similar declarations. Those seem to be persistent for the foreseeable future.