I cried. I cried because despite all that Anakin had done, he was a victim. He was used and manipulated by both Palpatine and the Jedi. It seems pretty obvious that Darth Plagius created Anakin, so he was a victim from the very beginning. It disgusted me the way that the Jedi and Palpatine were each trying to gain control of him. What Anakin/Vader did was inexcusable, but if you are looking for someone to blame then blame Palpatine and the Jedi.