I'm not taking a position on this. Just want to point out there are different perspectives and the debate remains open. Also Ike was the guy who tried to warn us about the Military Industrial (Congressional) Complex which has now bankrupted our nation and diminished our status in the world.
https://apjjf.org/2021/20/Kuzmarov-Peace.html
If you didn't get to watch the whole Bill Whittle video, I'd suggest picking it up about time mark 12:40.
In a nutshell, the Japanese Emperor himself said the reason he decided to surrender was because:
The enemy now possesses a new and terrible weapon, and the power to
destroy many innocent lives and do incalculable damage...
Should we continue to fight, not only would it result in an ultimate collapse
and obliteration of the Japanese nation, but also it would lead to the total
extinction of human civilization...
This is the reason why we have ordered the acceptance of the provisions of
the Joint Declaration of the Powers.
I'm not a genius, but when Ike or anyone else states Japan was ready to surrender, and the bombings were unnecessary, I tend to put more trust in the words of the Japanese Emperor himself. He said flat out the bombs were the reason for surrender. Not the massive fire bombing that leveled some areas by 50%, not the casualties on both sides, and not for any other reason.
The Japanese culture values honor, and there is no honor in surrender. Historically, defeated warriors often committed Seppuku or hara-kiri to atone for their failure and to prevent falling into the hands of their enemies. Death before dishonor.
I do like that there were US leaders who had moral objections to the use of the bombs, but to say "they were about to surrender anyway" without any evidence to support that opinion tends to not ring 100% true to me.
JMHO
I posted this topic because,
1 -- it's during the anniversary of the bombings
2 -- it's a valid topic for a self-defense forum, given the rationale of killing thousands to save even more lives, and
3 -- I wanted to explore the different facets of the decision to use weapons of mass destruction, whether they be nuclear, biological, chemical or technological.
Asking if it was necessary is an unsolvable riddle. since we did bomb Japan with nukes, there is no way to prove or disprove what Japan would have done that week, next month, or 3 years later. We do know, however, it brought a swift and complete end to the war.
I find it fascinating that there was a reported attempt to kidnap the Emperor on his way to the radio station to announce surrender, perpetrated by high-ranking military members who objected to surrender. If they had succeeded, the war would have drug on, and more would have died.