Pathos of living in an alien nation

What a pain it is to work and survive in a foreign nation - one might argue that nobody is forcing anybody to work in a foreign nation, but that is not an excuse. One has to deal with all the Visa bullshit, there is a fear of getting evicted, there is the culture shock and not able to freely socialize esp in a non-cosmopolitan environment, differences in food and eating habits, shopping and mating habits etc etc. A foreign national is always seen as a second class citizen in the developed countries, with the opposite happening in the developing countries (in these countries, there is another issue of preferential treatment by race, which is a completely seperate topic altogether). Think about it, for all the strife, and pain and issues going on for centuries now, there is one magic bullet to it - that is, to get rid of national boundaries. That, to me, is a free economy - and all rationalists will agree.

Lets work out some logistics here - with national boundaries gone, the whole world is just one big country. Each country of today becomes a province/state with complete autonomy over the actions but governed by a global authority (the UN of today, but something much more meaningful than a rubber stamp for the VETO nations). There is free flow of trade and talent across nations. Global elections are held to elect the central governing body and its members and each province (today's countries) gets to nominate members proportional to the population of the country rather than by arbitrary means or by virtue of a stronger economy. There will be incentives for people to freely flow across the nations, and this will make sure there is good distribution of people of all races all over the world.

These days are not very far away as far as i can see - probably by 2100, there will be a necessity for a global brotherhood. Whoever thought decades back that most of the European nations will be allied into EU with a single currency and total free trade flow??