According to Chapter 8, what is the true purpose of human life, and how does it contrast with a meaningless existence?

Chapter 8 of the Sai Satcharitra presents a profound philosophical argument about the purpose of human life. The text posits that a life spent merely on activities like eating, sleeping, fear, and mating is essentially useless and no different from the existence of animals like dogs or pigs. As the chapter explains, the true duty and unique opportunity of human birth is the attainment of the Supreme Self (Paramatman). It challenges the reader to consider that if nourishing the body and seeking pleasure are the only goals, then the human form is wasted. Chapter 8 emphasizes that a human being is meant to be free and independent, and the "true success of birth" is the realization of the Eternal.