Easy for folks to bullshit about the rights and wrongs of nuclear weapons years after they were first used to end the war in the Far East and rewriting history seems to be rife amongst the unwashed peasants in Ireland right now but I recall why nuclear was good back then .
I once had pals who had survived the Japanese POW camps, all dead now RIP. They would not have lived out the rest of their poor quality lives had the bomb not been dropped to bring an end to the war. The Japanese were planning to butcher them all and to fight to the death. During a visit to Bangkok some of us took a 3 day trip up to the Burma Railway sites but it was just too much for some of them. The bomb has kept peace for years now but we must hope that Iran and Korea do not get to use them.