Dropping the bomb was the correct decision at that time.
Anyone who says otherwise wasn’t on those ships headed to Japan for an invasion, which would have meant a massive loss of American lives, most of them young men.
After the bomb was dropped, those ships were turned around at sea and headed home - the war was over! I can’t even imagine the relief those men and their families felt.
Our family lost one of those young men, a pilot of a B-27 Marauder that was shot down, he was killed at age 23. My grandmother never recovered.
At work I sat across the aisle from a man who was on a ship ready to invade Japan. They knew there was little chance for survival. He was devastated by the people who protested dropping the bombs which saved his life.
The military made 1M purple hearts for the invasion. They still are using that batch for all the wars since WW2.