Yeah colonies too would have been economically much better off today had they not experimented with national liberation, but thats not how people think. They dont want to be paying taxes to a place they see as foreign. Nor do they want foreigners telling them how to do things. You are aware we are talking about old Europe here, and not Canada, Australia, or the US? The one that fought two world wars with itself in just over a 100 years. Not to even mention the other 2000 years of its long and very bloody history. I am very happy that the EU exists, but for Europe slow and steady wins the race. Centralization is not the answer because then countries with smaller populations get dominated by bigger countries.