Isn't there anyone here who knows that the UN isn't all about Peacekeeping/Security? Anyone who says that the UN is worthless is ignorant. Hundreds of NGOs (Non Governmental Organizations) are working around the clock to make the world a better place. For example there's the World Health Organization, UN Children's Fund (UNICEF), the World Food Program, Organisations that help developing countries, environmental organizations, drug control, United Nations Programme on HIV/AIDS, Development Fund for Women, and hundreds of other groups working directly with the UN. Oh and currently the UN is irradiating polio in Africa and the Middle East, next their working on Malaria. Not to mention the Work of other groups like the Trusteeship Council.
And even then the Peace Keeping stuff the UN does-does a lot of good. The overwhelming majority of member nations respect UN treaties and resolutions and no one ever said creating a peaceful global society on earth would be easy. Would you rather we all blow each other up to solve our problems?
Just research all these things that the groups and NGO's do within the UN and you'll see that there's far more to the United Nations than peacekeeping.