Don t you think the UN should shut down all nuclear plants world wide?

Fukoshima is done,and now the poison spreads world wide...If we all get through after this,can all the nations on the planet evan if not allies but join together to stop constructing nuclear warheads,power plants everything nuclear to just get rid of it,and make a huge space dumpster and lunch it far away from Earth.If we can t do that,why do we need nuclear power plants and nuclear weapons?What s the point?Thank you!