Fair question, given that the United Nations emergence on the global stage opened new doors for diplomacy. Talking about things has probably averted a conflict or seven over the years, and United Nations reports are typically plentiful sources of information that provide guidance to the issues of the world.
For all the criticism lobbed at the United Nations, it beats the alternative of tanks rumbling through the streets of Berlin, rioting in the streets and burning buildings in downtown Paris.
I think the hatred for the United Nations comes from its’ performance in the big moments. It's sort of like if your a really nice person, but tend to shoot your mouth off when people are listening. You'll get a reputation as a jerk and a blowhard whether its deserved or not.
The United Nations has frozen in some pretty big spots. I'm thinking particularly about the Rwandan genocide. The U.N. failed to listen to their people on the ground and now the death toll in Rwanda is over a million.
The U.N. has done great works throughout the world, but they've also had occasion to falter when it mattered most. Rightly or wrongly, their failures have been broadcast to the entire world and stand out more than their successes.