The characters in "Young Goodman Brown" grapple with disillusionment as they realize the truth about human nature. Their previous belief in the goodness of humanity is shattered as they confront the pervasive presence of evil. This revelation weighs heavily on them, leading to a loss of faith in the virtue they once valued.
Nathaniel Hawthorne presents a bleak view of mankind, suggesting that evil is an inherent trait. The protagonist's journey reveals that reliance on the perceived goodness of others can lead to profound disappointment. Ultimately, this realization brings about a sense of despair and an understanding of the darker aspects of humanity.