In 1945, the USAAF burned Japanese cities to the ground, nightly, without regard to the well-being of Japanese civilians - a lot more area was destroyed and a lot more civilians were killed in these raids than the atom bomb drops - so, how is that a meaningful basis for this judgement?
How does killing 200,000 civilians with two aircraft differ morally from killing 200,000 civilins with 2,000 aircraft?
It doesn't, but as a single act there is certainly a difference in magnitude. I'm not accusing you in particular, but there seems to be a reluctance among some to acknowledge the tragedy of those bombings in the haste justify them. There are arguments that justify the bombings. There is also a moral price. That is war.
Yes. Every decision we make from euthanizing a beloved pet because we cannot afford to restore him to health to eating meat from slaughtered animals to serving on a jury that will send a person to prison or cause him to be sentenced to death, to how we choose to spend and use our time, energy, abilities, and private resources all exacts a moral price.
To choose to defend yourself and/or your loved ones or others from a person or beast intent on doing them harm exacts a moral price.
To accept your country's call to train to kill and pick up a weapon of war exacts a moral price. To kill or be killed is a moral choice.
To choose to walk away from a crippled Japan still our enemy or bludgeon them into submission and unconditional surrender was a moral choice. To choose to kill many unconventionally rather than the almost certainty of killing many more via conventional means was a moral choice.
Given the limited alternatives we had, given the fact that the Japanese people are now a wholly independent, peaceful, prosperous nation that are friends with the world rather than oppressor, given that killing the many almost certainly saved millions in blood as well as treasure, and given that the demonstration has meant no nuclear weapons used in anger now for almost seven decades, I have to believe we made the right choice.