[BeyGon]

In the book "The Rape of Nanking" by Iris Chang there are interviews with Japanese soldiers after the war. They talked freely and unconcerned about what they did in Nanking and throughout the war. To them the Emporer was god, they were nothing. To them, the killing and torture of non Japanese meant nothing, they were less than dogs. It just didn't matter.
The radical Islamists have similar feelings, we are nothing, less than cattle.
So, back to bombing the Japanese, I still believe if it hadn't happened the war could have gone on and on and on. In most other conflicts we underestimate the enemy and their ruthlessness. This is one time we got it right.
We haven't learned much from it, we are still fighting but not necessarily to win.

Edit.
Even in WWII we underestimated the Japanese, FDR knew they would attack Pearl but didn't realize how good they would be.