Acharya Prashant explains that the human tendency for revenge is a biological inheritance from our animal ancestors. In the wild, survival depends on retaliation because animals act purely on instinct; showing mercy to a predator does not change its nature and only endangers the victim. Humans, however, possess the potential to transcend this physical conditioning. While revenge might provide a momentary sense of satisfaction, it ultimately leads to a cycle of continuous suffering and further conflict. True spiritual growth involves moving beyond these animalistic reactions through forgiveness and compassion.