"Everyone else does it, and therefore it is okay that *I* do it."
(1) Was the destruction of Berlin, Tokyo Nagasaki and Hiroshima justified in order to win the war?
(2)Was it justified in order to save our men at the expense of the enemies' civilians? Why or why not?
(3) And additionally, would such an action be justifiable today to win the "War on Terror"? Why or why not?
But of course, you've already answered the last question, so why not?