The UN still serves a purpose. I'd rather have the ambassadors come to the UN and air their grevences while we ignore them, than having them get together behind closed doors and come out with big smiles. The UN has never really had any power. It is just a stage for the rest of the world to pretend they are important. Some times WE need that so THEY don't start focusing their attention to important matters...like what WE are doing.
Your right I would rather have them out in the open where we can exercise the veto than having France, Germany, Russia and China having comlete control over it. I think it's time that all member states pull their fair share of the load, The United States should not have to burden the taxpayers with more than a reasonable share. If we supply the food and the equipment to deliver it then it should be paid for out of the UN coffers.