All the Japanese cities were legitimate targets and we should have dropped a hundred of them rather than invade Japan and lose any other American lives.
The number of civilians killed is irrelevant. In modern warfare, a worker in a factory is as legitimate a target as the factory. The fact that the worker's families were close by is too bad for them.
When my son was three, I got to introduce him to General Chuck Sweeney who flew "Bockscar" on the second atomic bomb drop. I thanked General Sweeney for his service and my being there to meet him. My father was scheduled to be a landing craft driver in Operation Downfall in October of 1945.
The Islamists warring against the US do not see the distinction and neither should we. If you seek the destruction of the US whether overtly or covertly, directly or indirectly, you are are a legitimate target. If you object to your families getting killed as collateral damage from killing you, stay away from them.
Garde la Foi, mes amis! Nous nous sommes les sauveurs de la République! Maintenant et Toujours!
(Keep the Faith, my friends! We are the saviors of the Republic! Now and Forever!)
LonePalm, le Républicain du verre cassé (The Broken Glass Republican)
Dropping the bombs also kept the Soviets, and ultimately the ChiComs out of Japan.
How would you have liked 5-10 years after Tojo’s defeat to have to return to Japan to fight the Reds?