This discussion really is moot. We have so much more information now. At the time they didn't even know if the bombs would work.
Hindsight is always better.
With what we know now, we would have invaded Russia when we were done with Japan, for gods sake.
I tend not to judge that generation too harshly, as they have shown time and again, that they were the WE generation.
The world is far from that now.
