Why did the us want to end ww2 as quickly as possible?

So no more lives and supplies were lost because we were running low and would not have won

Sir thomas more, venerated in the catholic church as saint thomas more, was an english lawyer, social philosopher, author, statesman, and noted renaissance humanist. he was also a councillor to henry viii, and lord high chancellor of england from october 1529 to 16 may 1532. i found this information on wikipedia

Transcontinental railroad was the most effective way to travel.