Here's a list of accomplishments of the "useless organization". Well, the first 15 anyway. There's 50 in all, but I doubt you'll read them. Of course, the list isn't all inclusive, so I'm sure there's more than that, but I doubt it'd convince you too.
1. Deploying more than 35 peace-keeping missions. There are presently 16 active peace-keeping forces in operation.
2. Credited with negotiating 172 peaceful settlements that have ended regional conflicts
3. The UN has enabled people in over 45 countries to participate in free and fair elections
4. Development - The system's annual disbursements, including loans and grants, amount to more than $10 billion.
5. UNICEF spends more than $800 million a year, primarily on immunization, health care, nutrition and basic education in 138 countries.
6. UN Human Rights Commission has focused world attention on cases of torture, disappearance, and arbitrary detention and has generated international pressure.
7. UN Conference eon Environment and Development held in Rio de Janeiro in 1992, resulted in treaties on bio-diversity and climate change.
8. Has helped minimize the threat of a nuclear war by inspecting nuclear reactors in 90.
9. Over 300 international treaties, on topics as varied as human rights conventions to agreements on the use of outer space and seabed.
10. The International Court of Justice has helped settle international disputes involving territorial issues, diplomatic relations, hostage-taking, and economic rights.
11. The UN was a major factor in bringing about the downfall of the apartheid system.
12. More than 30 million refugees fleeing war, famine or persecution have received aid from the UN High Commissioner for Refugees.
13. Aiding Palestinian Refugees with free schooling, essential health care, relief assistance and key social services virtually without interruption. There are 2.9 million refugees in the Middle East served by UNRWA.
14. Alleviating Chronic Hunger and Rural Poverty in Developing Countries, providing credit that has benefited over 230 million people in nearly 100 developing countries.
15. The Africa Project Development Facility has helped entrepreneurs in 25 countries to find financing for new enterprises. The Facility has completed 130 projects which represent investments of $233 million and the creation of 13,000 new jobs, saving some $131 million in foreign exchange annually.
http://www.una-usadanecounty.org/about/index.php?category_id=1550