I don't really differentiate between the bombing of Hiroshima and Nagasaki and the bombing of London and Dresden. So what if it was a nuclear bomb? They rate nuclear bombs as if they were huge piles of TNT. An explosion is an explosion.
And war is war. I'm sorry if you're surprised that innocent lives were lost in the largest war this world has ever seen. Roughly 33% of the casulties in the entire war were civilians--even in Russia. (http://web.jjay.cuny.edu/~jobrien/reference/ob62.html
) Listen, when you bomb strategic points, that involves roads, power plants, and factories.
If you intend to deprive the Japanese military of water, electricity, and food, maybe you would like to tell me how you intend to supply it to the Japanese civilians.