I like living in my head because in there, everyone is kind and innocent. Once you start integrating yourself into the world, you realize that people are nasty, mean creatures. They're worse than zombies. People try to crush your soul and destroy your happiness, but zombies just want to have a little nibble of your brain.
The pretty ones are usually unhappy. They expect everyone to be enamored of their beauty. How can a person be content when their happiness lies in someone else's hands, ready to be crushed at any moment? Ordinary-looking people are far superior, because they are forced to actually work hard to achieve their goals, instead of expecting people to fall all over themselves to help them.