This Is Metaphysics

"A lot of people want to know what makes a life worth living. Some people think that a person's life is worth living if and only if that person experiences a greater amount of pleasure than pain throughout the course of her life, and that a life is better or worse to the extent that the balance of pleasure over pain is higher or lower. But I think that the theory that a person's life is worth living if and only if that person experiences throughout her life a greater amount of pleasure than pain, and that a life is a better or worse life to the extent that the balance of pleasure minus pain in that life is higher or lower, is a false theory. Here is an argument against the theory that a person's life is worth living if and only if that person experiences throughout her life a greater amount of pleasure than pain, and that a life is a better or worse life to the extent that the balance of pleasure minus pain in that life is higher or lower"--