@frogzone @stefano
There is another unfortunate reason that requires nuclear power generations.
If any country has plutonium as wastes of nuclear power generations, and it is not at all used for next nuclear power generations, countries around there would be suspicious that "is the country going to become a new nuclear-armed states?". The only way to avoid such suspicions would be pass all plutoniums to other countries or use them for nuclear power generations.
Quite unfortunately, nuclear wastes incorporating plutoniums exists in reality.