The doctor protects the universe from the evil and unkind. for everyone he saved he is something of a hero, even a messiah. To all those he has defeated countless times, always watching, always ready, he seams something of a demon. Even the Daleks had come to fear him. And let me tell you something, Daleks DON'T feel any emotion other than Anger and hatred. For something that was made to hate, and despise the universe, feel fear? that is something in and of itself.