I actually think this(One world state) would be a terrific idea. I see the EU, NAFTA, African Union, and the Latin American and Asian blocks as baby steps towards implementing this vision. Fundamentally borders, ethnicities and nationalities are pretty stupid. They just serve to divide people and create meaningless conflicts. Unfortunately it will probably take a long time(probably not in my life time) to make this happen, but if it did happen I definitely think it would be A Good Thing(tm).