After seeing how determined the Japs fought on Okinawa, that provided the justification for deciding to use "Fat Man" and "Little Boy". They knew an invasion would lead to far too many casualties....on both sides.
For weeks this year, i was watching the old Battlefield series on Youtube. Guadalcanal, Midway, Okinawa, iwo Jima, Marianas...the bastards were harder to kill than krauts. That’s why Patton was laughing at these Nazis while Mcarthur wasn’t at his Jap adversaries.