[cb18]

Because like it or not, westerners are more or less entirely responsible for creating the modern world[0], if we just decide to do away with the idea of a nation state and let all the people from not so nice places move freely en masse to the nice places, then we won't have any nice places left.

[0] http://alphagameplan.blogspot.de/2015/12/culture-and-civiliz...

Why should we deny equal rights (the right to work or move freely) to human beings based on their national origin?

Why should we prevent a woman from off the street from coming in your house and eating your family's food?

Sure we are all born on this and of this planet, but it is human nature to form alliances such that our groups are stronger than any one of us, these alliances and groups exist at multiple scales, from families to nations. Most political nations have a very high overlap with an ethno-nation, which are basically really big families.