I will try to be serious here:
Hitler served in the German army as a normal soldier. He won many Iron Crosses in battle and had taken a bullet for a general at a battle. Hitler had seen the things the enemy had done to Germans and Austrians and it made him very pissed. After the war, Germany was forced to sign a treaty that basically destroyed Germany's economy and government. They were rendered useless even though they did not start the war.
Supposedly, WWI was started by the assassination of an Austrian prince. Austria had a treaty with Germany and the Ottoman Empire. They declared war and were defeated. None of it was Germany's fault but they were still held responsible.
After the Versailles Treaty which had basically turned Germany into a third world country the Nazi party rose up to save the economy. Hitler was elected chancellor. He started to take back land they had lost to the treaty and then France retaliated. Hitler actually killed more than Jews, he was actually trying to do the best for Germany by getting rid of communists.
To sum it up, Hitler was a typical german at the time with great Charisma and typical german beliefs. He loved Germany and would do anything to get back at the French who screwed them over.