I think it was necessary for the US to drop the atomic bomb. Even though it called hundreds of thousands of people, it saved the lives of millions of Americans and Japanese alike. I think it would have been interesting to see the outcome of the war if Japan did keep fighting after we dropped the second one, because it would have taken the US months to make another one, so I guess it was really lucky for us that they finally decided to wave the white flag at the time they did.