I’d be upset about all the sailors dying, yes.
But FDR sold the country to the Soviets and all their aggression.
Korea and Vietnam would not have happened but for the weakness shown by FDR.
Obama would not be happening but for FDR.
On November 14, 1943, the Vice President was Henry Wallace. He would have been much worse than FDR in dealing with Stalin. Much more of Europe might have ended up behind the Iron Curtain than it did (unless he was defeated in 1944). The party big-wigs realized in 1944 that FDR was unlikely to survive another four years so they forced him to drop Wallace as his running mate in 1944.