My 1$,45C.
1. Nukes killed more people than they should because of lack of today's knowledge, drinkin' black rain? No thx.
2. Many German and even Japaneese cities saw major destruction by massive bombing, the so called "terror bombing", same thing although with conventional weapons but that makes it OK I guess...
3. The world was sick and tired of the most brutal war ever fought in history of mankind, EVERYBODY wanted it to end - ASAP.
4. You don't teach women and children to use guns if you plan to surrender, you don't teach people to put on some explosive crawl under a tank and blow themselves to pieces taking the tank with them.
Sure I completely believe that certain elements in Imperial Japan wanted to end it painlessly, but certain elements are often not enough, you either surrender or you don't. Nobody will wait for ages until you make up your mind especially at the end of WW2.
5. Stalin started the war together with Hitler, they splitted Poland in half, made some war crimes, you know, the usual stuff. It was always a curiosity to me how quickly has that been forgotten, not to mention brutal war crimes done by Red Army in Germany in 1945 did anybody in the West even flinch on that? The primary mission of every soldier in Germany in late spring 1945 was running in direction of the Americans, hint - not to attack
Conclusion being a big superF'inpower in a war is great as everything you do is quickly and easily forgotten, if you are small everybody will step on you even if you are just defending yourself.
Go figure why everybody and their mother want's to have nukes today...hehe, NOBODY on international political scene will take you for much more than a dirt under your fingernail if you don't have it...