Aside from some UN based charities, the UN in general is a joke. A sick, twisted joke, where child prostitution/rape is the punchline.
Letting amoral dictators vote on human rights and nations frequently involved in wars vote on world peace, is like letting the mafia have a say on how to fight crime.
The UN is noble-sounding in its charter, despicable in its membership, and impotent in its results. This is the kind of organization the world deserves, but certainly not what the world needs.