The war the Germans started killed about 30m people from among the European Allied nations. The German death toll was about 8m. Maybe we should have equalized the score and picked 22m Germans to kill in order to settle the score. The reality, however, is that there were bigger fish to fry. We needed German manpower in case the Russians decided to go for the whole enchilada - the rest of Europe. We wanted Germany to be an economic engine for the part of the Europe not occupied by the Soviets. So instead of turning West Germany into a giant farm via the pastoralization policy drafted by fellow traveler Harry Dexter White, we decided to help it recover and eventually become a normal country. The rest is history and just another variation on why victors seldom slaughtered the people they had conquered. You need them in place to defend that territory. And you need some of the elites that were your former enemies to do the job, because they know their business.
https://en.wikipedia.org/wiki/World_War_II_casualties
https://en.wikipedia.org/wiki/Harry_Dexter_White
“The war the Germans started killed about 30m people”
Actually the war started in China several years before 1939 - that was the japanese starting it there and they killed millions
Also dont forget the german russian nonaggression pack that allow Poland to be gobbled up from both directions simultaneously