How does Chapter 8 use comparisons to animals and inanimate objects to illustrate the potential futility of a purely physical existence?

Chapter 8 of the Sai Satcharitra employs strong analogies to emphasize its philosophical point. It argues that if life is only for nourishing the body and sexual pleasure, it is useless. The text asks what greatness the human body has if it is in the same state as dogs and pigs, who also fill their bellies and reproduce. As explained in Chapter 8, it further questions the difference between a human and a dog if life is only spent on eating, sleeping, fear, and mating. The chapter even compares a life of mere breathing to a blacksmith's bellows, suggesting human life must aim for a higher purpose.