While that is one theory, you should keep in mind that ignoring the Japanese empire was simply not an option. They would never surrender unless forced to. Also, remember that the bombs were a powerful message to the generals controlling the empire. The Japanese would never have surrendered without such drastic action. Believe me, if there were an option that didn't involve the bomb, I would be making an argument for that position instead. This option had the least loss of life statistically.

Thank you for your response!