We saved a million American lives by dropping the bomb. We also saved 10s of million Japanese lives by dropping it.
That is the projected deaths predicted by a land invasion of Japan.
You can’t convince that the 200,000 Japanese dead by nuclear blast is better that 10,0000,000 Japanese and 1,000,000 Americans killed by bullets, bombs, suicide and starvation.
Not only that, but the option of blockade would have taken years and literally cost tens of millions of Japanese civilians.
The bombs saved a million or more Japanese lives and 500,000 American killed and wounded. It was the best option that was available. We would have bombed Japan day and night for months leading up to a invasion. Millions of Japanese civilians would have defended their homeland using pitchforks and other tools. They would have died by the tens of thousands.