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

Chapter 8 of the Sai Satcharitra posits that the true duty and purpose of human birth is the "attainment of the Supreme Self (Paramatman)." The text strongly argues against a life spent merely on survival and sensual pleasures, questioning if the point of life is just to be born, grow strong, and breathe. As explained in this chapter, if a person's life is wasted only on the four activities of eating, sleeping, fear, and mating, then there is no difference between a human and a dog or pig. The author emphasizes that if nourishing the body and sexual pleasure are the only goals, then this human birth is rendered useless and without purpose.