The two uses of nuclear weapons in Japan were horrible. It's been long debated whether or not that choice vs. the invasion planned was the better of two. I won't get into that.

What is more horrible is that instead of staying shocked at the potential of nuclear war, humans in every nation that could tried to make more and bigger ones...for defense, of course. And the islands weren't originally uninhabited, that's a nice story of forced relocation for the humans. The wildlife, not so much. That was the point of the post, the history of nuclear arms post-Japan is far worse than the first two bombs used.