Most of the time when people say they have an unpopular opinion, it turns out it’s actually pretty popular.
Do you have some that’s really unpopular and most likely will get you downvoted?
Nuking Japan was in proportion and in service to the United States’ legitimate military objectives.
Is this actually an unpopular opinion? For sure horrible like all things in war, but I understand that the alternative was an invasion with a hell of a lot more casualties.
Should the USA have invaded Japan instead?
The imminent threat of an invasion (assembled in staging area and ready to go) could have been tried before. It would have been very costly, but would have been necessary anyway for an actual invasion if the nuclear bombs didn’t cause a surrender (there was a coup attempt to prevent it, so it was never a sure thing even with the bombs).