Why do good essayists describe personal experiences in their published writing?

The personal essay is one of the most popular forms of essays. Personal experiences help other people to relate to you and the point you are trying to make. Telling stories, or anecdotes, emphasizes experience and knowledge of certain things, and makes an emotional point as well as a logical one. Good writing is *always* personal to some extent. You can't remove the voice from something written and still retain the power. When you try, it becomes as dry as a technical manual or a business memo. Even when writing fiction, good writers express themselves, their imagination, their emotions and ideas through other characters.