The choice is clear once you have the facts. Of course maybe you don't think it matters if American soldiers die. Maybe you think it's better that they die than the enemy. Try telling that to the wife of a soldier lost in battle. Try explaining that to a kid who wonders where his dad is. "The Japanese who attacked us at Pearl Harbor and want to kill us are more important to keep alive than your daddy".
You see think pictures of the a bomb with horror. And rightly so. But you forget the horrors of Okinawa. The terror of Kamikaze pilots literally suicide bombing the Americans.
The a bomb was not only better from a military and casualty standpoint, it was better for Japan in the long run. It completely broke the back of their military empire in a way that not even an invasion could. It was complete and utter defeat that crushed their delusions that they would gain greatness through military strength. That enabled them to move on and rebuild focusing on the right thing, economic power