We are talking here about a relatively short time frame though, like the last 50-60 years, more or less. Poverty, famines, epidemics etc. have been relatively common even in Germany, Britain and France 150 years ago, many of the things we see today one way or another in other nations. This incredible large garb we see today is relatively new. And I would say a lot of it has to do with the cold war and WW2. But that's just a guess. The world was divided for the most part between two super powers, and eventually, depending on which side you ended up, had a lot do with your future. See west and east Germany. The Soviets lost. So did many of their satelite states with them. That's why I feel this has more to do with luck. Again. In 150 years our children might be all trying to escape to Russia and China. Do you know it? I don't. History tells us that empires come and go. Some thousands of years ago you had the hellenistic period, Egypt, the Romans, the Ottomans, China and Mongolia, now the British Empire, France, Spain, And not long ago the Soviets and today the US. The ancient greek saw the other nations as savages and barbarians. And many other empires did as well. Things change, and almost every period had some society reign and controlling vast territories and leading with their culture at some point. Trough slavery, war, occupation, you name it. Sometimes for a short time, and sometimes for hundred of years. There is nothing that tells me we as culture would be something special really.