7. Adolf Hitler 1889–1945 : We have covered Hitler many times on Listverse, but rarely from a somewhat historiometric perspective. We all know that he remains the primary cause of WWII. He instigated it to suit two profound desires: to become the most powerful person on Earth, preferably in history, if not to rule the whole world; and, for his own enjoyment, to cause as much pain as possible against all those he deemed responsible for Germany’s humiliating and miserable defeat in WWI, and its squalid poverty between the wars. Germany was forced to pay every other nation’s wartime expenses after the First World War, and this utterly destroyed Germany’s economy. The Deutschmark became so worthless that children burned millions of them at once to keep warm in the streets.