[M]ost obviously, living alone can lead to a disposition that I am center of the universe. When I eat, sleep, brush my teeth, and exercise I must ask leave of no one and can to exactly as I please. I never have to make a meal out of something I despise because it is the favorite of someone else. I don’t have to get up in the night to help a sick roommate or spouse, to rub a sore back, fetch a glass of water, or get an extra blanket to stave of the chills of fever. If I do any of these things, it is solely for myself and no other.