World government?

[FerrisBueller86]

While I believe in international cooperation (United Nations, Interpol), I strongly believe that we should have many separate and autonomous nations.

I think having one government for the entire world is a bad idea.  What happens if that government screws up and we end up with hyperinflation, the collapse of the monetary system, war, widespread corruption, genocide, persecution, etc.?  When there are many different nations, people have the option of moving to another nation in the event that their livelihood or survival is doomed in their home nation.  If the whole world is under one nation, then there is no such option.

Another advantage of having many different nations is that different ideas can be tried.  When one nation is particularly successful on an issue and another is a miserable failure, this provides valuable guidance to the rest of the world.  Just look at capitalism vs. Communism.