Good post!
Before we would have put one soldier on Japans home Islands we would have destroyed all of Japans major cities, all their industrial capacity, all the major infrastruture. We had total control of the air over Japan and could destroy at will. Japan would have had no way to feed itself, no way to treat it ill and dying. Disease and starvation would have killed many millions of Japanese if we did not drop those atomic bombs.
They would have fought us for each and every square inch of the home Islands. In such a battle (as in all battles like that) we would have killed with a vengeance and hatred that would have been unequaled in history. Many of our troops would have died. Those left alive would have become killing machines hell bent on vengeance, just as they were on Okinawa. Many of the soldiers in caves refused to surrender. We burned them alive with flame throwers. This act though horrifyingly brutal was totally justified. To go into those caves would have cost a lot of American lives.
Please note this is not in any way criticism of our honorable soldiers in WWII. It is simply a statement of fact.
People need to read their history or at least watch the History Channel and the Band Of Brothers Pacific miniseries.
The Japanese would all have died defending their homeland. They would not surrender. It was not the HONORABLE thing to do.