I think a global society would never work, because there are too many differences, cultural, political, religious, economical, between nations. It would be something doomed to failure. Much like the EU, in my opinion. By the end of the 20th century globalization was an important trend, but soon after nationalism started appearing here and there and much as an answer to this trend. It was the other side of the coin. People rebelling against standardization. It is human nature to defend their differences, so people in general would not take kindly or lightly a central government and standard rules. At the same time there would always be regions trying to run other regions, on account of oil, on account of money, on account of interests. Groups of regions with same interests would soon get together. Politics is about interest not equality and globalization is suppose to have some sort of equality as basis, otherwise it wouldn't work, as actually can't work. So, going down a globalization path would probably just end up in chaos and war, when the courtship period would be over. That being said, I think we are better off with sovereign nations. Very interesting question, a lot more to be said. If I have the time, will sure make a hub about it.