It was only a matter a time before their infrastructure collapsed. The nuclear option may have been a lesser Bad.
This is true and I think the Japanese recognize that as well.
The nuclear option was necessary because there was a gun behind every blade of grass for both countries.
That is a powerful deterrent for would-be invaders.
Arm yourselves.
The point was, we merely needed to lay siege and wait them out. The nuclear option may have the lesser Bad.
Or kick their ass and get it over with, which is exactly what happened.
Very poor choice because no matter how one tries to justify it, it was totally and completely illegal to attack whole cities of civilians.
There is no way to ever make that anything but a serious war crime, that sets an incredibly bad precedent.
You could almost justify attacking civilians in an democratic republic, where each individual is somewhat responsible for that the government does, but the civilians in imperial Japan were totally and completely innocent, since they had no part in starting the war.