According to the Shri Sai Satcharitra, what is the ultimate purpose of human life that distinguishes it from animal existence?

Chapter 8 of the Shri Sai Satcharitra posits that the true duty and purpose of human birth is the attainment of the Supreme Self, or Paramatman. The text argues that if life is spent solely on activities like eating, sleeping, fear, and mating, then it is a useless birth with no meaningful difference from the lives of animals like dogs and pigs. The scripture pointedly asks what greatness the human body holds if its life is reduced to mere survival and reproduction. Therefore, the text emphasizes that the unique potential of human life lies in spiritual realization, not just in nourishing the body or seeking pleasure.