If by "we" you mean Truman and his inner circle, okay.We had plenty of ships to spare? That means AMERICAN LIVES!!
You literally stated we had PLENTY OF AMERICAN LIVES TO SPARE!
On the wrongs side of the war, you are.
That's what fighting wars is all about. How willing are you to throw away lives in order to acheive your goals.
We could have had peace with Japan in 1944. We didn't want that. We wanted Japan to know damned well it had been defeated and we were willing to throw away American, Japanese, and Chinese lives to do it.
If the American people knew Japan offered to surrender, they would have demanded it be accepted.
And that was the point. By 1945, Americans were sick of World War II. They were sick of drafts, they were sick of rationing. they were sick of the men who would come by the house to inform you Little Johnny was coming home in a box. Or not coming home at all.
The reason why Okinawa was such a PR disaster was that it was the first time the folks back home got to see what a dead soldier looked like.