UN 2.0?

There are many reactions you can get from people by talking about the possibility of a world government, some get starry-eyed and dream about the day when wars do not exist. Some might become uncomfortably nervous and absentmindedly feel for their sidearm, and think of how long one could live off the land in the deep woods before 'they' came for him. And a few might let a grim smile slide across their sneering face and imagine the kind of power positions in that organization could bring, and wonder if anyone can see their boner.
On the practical side of things, our world is becoming so interconnected and dependent upon each other country that some sort of controlling body for international politics is going to be necessary. Just look at what happened when the U.S. housing market crashed; our economic slide started pulling other countries into depressions of their own, so much that the need for oil has declined worldwide, begun by our precipitous descent into the gas prices we see today, prices many said we would never see again. A world government, properly managed, could put an end to or at least minimize the far reaching effects of such an economic catastrophe. But problems would inevitably arise.
The logistical considerations for such an organization are immense. There are 266 nations, dependencies, and other entities in the world, over 6,900 languages (counting various dialects), many radically different types of government, and well over 6.6 billion people. If you need an example of how these kinds of numbers can stymie any kind of relative efficiency, just look at the current United Nations. Do they really seem united at all?
An organization of such astounding numbers would have to approach its rule in a nearly utilitarian fashion, doing what was best for the planet as a whole, and not bending the wishes of smaller numbers looking to exploit for their own gain. I have a feeling many capitalists would cry foul at something like this, which is why a strict adherence to a set of rules and an international court would have to be mandatory, similar to how the UN is (sic) run.
I think it is inevitable, and quite possible within the next few decades to see the forming of such a governing body; and while I plan to buy a decommissioned military base and stockpile my own arms, then secede from the world as a whole, I encourage this joining of the world governments together for the peaceful benefit of all mankind.

For more information check out this inspirational article.