My initial guess is that it focuses on human depravity, an accessible topic compared to the more explicit theological claims in the latter parts. That is based

My initial guess is that it focuses on human depravity, an accessible topic compared to the more explicit theological claims in the latter parts. That is based on my very loose knowledge of the material, though. The self-righteous urge probably contributes: assurance that "I wouldn't possibly qualify as anywhere near this bad."