Hamlet seeks revenge for his father's death, but his actions of killing Polonius, Rosencrantz and Guildenstern, and Laertes instead prolong the cycle of violence and death. Hamlet's quest for revenge takes a psychological toll on him and causes him to descend into deep melancholy and madness. Similarly, the ghost of Hamlet's father is unable to rest in peace due to its desire for revenge. Ultimately, seeking revenge often does more harm than good and fails to satisfy one's desires, so alternative means of justice are preferable to vengeance.