Why does the Satcharitra compare a human life focused on basic needs to that of dogs and pigs?

In Chapter 8 of the Sai Satcharitra, the text uses a stark comparison to animals to highlight the wasted potential of a purely materialistic human life. It points out that dogs and pigs also manage to fill their bellies and reproduce. The author asks, if nourishing the body and sexual pleasure are the only goals, what is the difference between a human and a dog? This comparison, as found in Chapter 8, is not meant as a literal insult but as a philosophical tool to provoke the reader into considering a higher purpose. The true duty of human birth, the text concludes, is the attainment of the Supreme Self, an endeavor that elevates humans beyond mere survival instincts.