Even if the war, it should prevent the use of nuclear weapons.
Most of the time, the casualties of war are innocent civilians.
Whether the bombing was necessary in order to end the war?
Damage of nuclear weapons extends to the general public, but the United States has used of twice within a relatively short period of time in WW2. (America dropped an atomic bomb on the city of Hiroshima and Nagasaki.)
During the war, it should not have to use nuclear weapons to victimize innocent civilians.
Atomic bombing causes large amounts of damage to ordinary citizens. Thus, it was the wrong decision to use twice a nuclear weapon.