Should US have dropped the atomic bombs on Japan?

At the ending stages of World War 2, the US dropped the atomic bombs, Little Boy, upon Hiroshima on 6 August 1945, and Fat Man upon Nagasaki on 9 August 1945, in a bid to bring the war to an end as quickly as possible. Till today, there had been numerous debate about this issue, and whether the atomic bombs should have been used to end the war. Personally, I agree with the US's action to drop the atomic bombs on Japan, as otherwise, there would have been more casualties, and Japan would have fought to the last, causing the war to be dragged on for much longer, prolonging the suffering of the both the prisoners and the civilians caught in the war. Also, for the US, it was preferable for the Japanese to die rather than its own citizens. Therefore, due to the reasons stated above, the US dropped the atomic bombs on Japan.