He killed people when he did not need to. “The castle of Macduff I will surprise; seize upon Fife; give to th’ edge o’ th’ sword his wife, his babes, and all unfortunate souls that trace him in his line” (IV, i, 150-153). Macbeth desired to kill Macduff because he wanted to ensure that Macduff would not become a threat to him, but Macduff was not in Scotland. Macbeth could have sent someone after Macduff, or he could have waited for him to come back, but he did not. In a rage, he impulsively sent people to murder everyone in Macduff’s household. Macbeth did not need to murder these innocent people, but he did it anyway because his fear and new position made him cruel. This caused Macduff to come after him with a vengeance, which led to him beheading Macbeth in a final battle.
Macbeth was at fault. He is the reason the horrible events occurred. As a result of his actions, so many people died. He murdered Macduff’s innocent family, and he forced his army to fight in a war they did not believe in. People on both sides of the battle needlessly lost their lives. His wife also went insane because of what they did and then she committed suicide. Malcolm, the rightful heir to the throne, and eventually, Banquo’s descendants became king because of Macbeth’s