Paula, there is a crucial first step that would need to take place before we could have an "alliance of governments by the consent of the governed". That is that the vast majority of the governments of the world need to convert to a system that requires the consent of the governed. The majority of the member nations of the U.N. are virtual dictatorships with possible a little deomcratic lipstick on the tyrannical pig. So before your hypothetical system could ever come about, China for one, would have to completely rebuild their government on democratci republican principles before they could even particiapte in such a system.
Even our own country, a large number of our laws are pushed thru with complete disregard for both the Constitution OR the consent of the governed. The Cap and Trade which is on the brink of becoming law is only the most recent example, the failed attempt to ram Shamnesty down the throats of an outraged American citizenry is another, in the last decade alone there are numberous examples of the rule of law and the will of the people being given the middle finger by our elected officials.
The more local government is, the better it can be kept under control by the people. If the mayor of my town tried to round people up and force people into FEMA type camps, for instance, the result would be a dead mayor. The larger and more distant the government force, the less control the people actually have, and the more power the government has at tis disposal to handle "dissidents".
You are "hypothesizing" on more centrallization of power, which would only open the door for more abuse of the people. Power needs to be distributed, not centralized. I think you have had these basic concepts repeated to you enough, however it is you who will not leave their comfort zone, not everyone else as you claim. (I noticed you claimed you did not have a comfort zone, what a bunch of hogwash, and what a condescending attitude tot ake that ONLY YOU are seeing things without blinders on.)