<le sigh>
This is the sort of thing that's simple. Due to the UN serving a broad array of interests, not all of them reducible to the chain email your uncle sent you, there are many interests it serves by continuing. Some are virtuous, some are highly profitable. But none of them are any specific cabal deliberately plotting the downfall of any one particular flavor of bland suburbia.
In the case of the UN post-Cold War, you have the fact that its a lever for the non-Aligned Movement. Maybe not the best or most specific lever, but its a lever they can use occasionally, and use to be bigger than anyone member. While this should not need be said, all of those Strange People Who Live Somewhere Else think of themselves as the stars of their own stories, and not the bit players in yours. The UN can serve their interests; they will support it. It can serve the interests of many people in the larger powers; it even serves commercial interests who rail about it in public. They will all support it as well. It may, shockingly, even have affects which support you! You don't think so? Malaria prevention, for one, has broad transnational affects, Mr. Florida at the top of the thread.
The too long; didn't read? The UN will be plotting to Take Yer Guns and Turn Yer Children Gay for a good long while yet. Bon chance.
