"I willingly took John Lennon's life. What I did was despicable"

Mark David Chapman's quote shows his remorse for his actions in taking the life of John Lennon. He acknowledges that what he did was incorrect and despicable, and he willingly chose to do it. His words suggest that he knows the gravity of his actions and the repercussions of them. He is expressing remorse for his actions, and it is likely that he is seeking some form of redemption or forgiveness. His words likewise recommend that he is aware of the impact his actions had on the world, and the discomfort and suffering he caused to Lennon's family and friends. His words are a stark suggestion of the power of someone's actions and the disastrous repercussions they can have.