I need to correct my prior post. It was Nagasaki that was the seat, followed by Hiroshima. So I would rather have limited Christian deaths in whatever way possible.
We didn't target Tokyo because 16 square miles of the heart of the city had already been incinerated by the most destructive bombing raid in history at that time.
Tokyo before and after firebombing raids
Hiroshima, Nagasaki and other cities had been spared bombing for the specific purpose of illustrating the before and after affect of the A-bomb.