Even if we achieved every instinctual gratification we hope for, our lives would be utterly aimless, meaningless, hence depressing, hence, it is usually those people who actually do achieve their selfish instinctual desires that begin to question the point of life; while those people, for example blacks in Africa, who can only dream about money their whole lives, are stuck in a delusion that there is a pot of gold at the other side of money, not depression!