Why did Hitler decide to punish Jews?
Hitler decided to exterminate/murder/destroy the Jews because of his hatred. He falsely and steadfastly believed that Jews were responsible for almost all of Germany & Europe' problems. He decided that they (the Jews) would become the scapegoats & sacrificied to make much of the German population happier about its economic, political & cultural situation. He found that many Germans would support a few of his measures, and that a few would support all his measures. He would start small, and expand these measures as the years went by.