According to Chapter 8, what is the true purpose of human life, and how does it contrast with a life focused only on basic survival?

Chapter 8 presents a profound philosophy on human existence, stating that the true duty of human birth is the attainment of the Supreme Self (Paramatman). The text explicitly questions if life's purpose is merely to be born, grow, and breathe. It argues that if life is wasted only on eating, sleeping, fear, and mating, then there is no difference between a human and an animal. As Chapter 8 poignantly asks, what do dogs and pigs lack in terms of mere survival? The chapter concludes that a life focused only on nourishing the body and sexual pleasure is useless, and the realization of the Eternal is the true success of birth.