It's a shame that murder can become a person's addiction. In Shakespeare's Macbeth, Error in Macbeth's judgment causes him to go from a noble man to a cold hearted, bloodthirsty murderer. The murders of Duncan, Banquo, and Macduff's family, cause Macbeth's deterioration in character.
             His desire to be king causes Macbeth to break away from his nobleness and enter the life of a villain. Driven by Lady Macbeth's sick and twisted mind and her desire to be a queen, she forces Macbeth into this villain life. Lady Macbeth convinced
             Macbeth that he wasn't a man unless he went through with the murder of Duncan. She threatens his manhood by saying "When you durst do it, then you were a man;/ And to be
             more than what you were, you would/ Be so much more the man" (act I, scene vii, l 49-51). This made Macbeth begin to think. Slowly but surely Lady Macbeth had manipulated his mind to think the right thing to do was kill Duncan. Macbeth had committed the crime he felt that his soul could never be cleansed no matter what he did. He said, "They pluck out mine own eyes!Will all great Neptune's ocean wash this blood/Clean from my hand? No; this my hand will rather/The Multitudinous seas incarnadine,Making the green one red" (act II, scene iii, l 58-62). This shows that he really didn't want to kill Duncan, but he did it in order to prove himself to Lady Macbeth, and to become the king. This shows his Deterioration in his character by giving him the title of a murderer.
             By taking the title of murderer, Macbeth encounters another problem, the cleverness of Banquo. As Banquo gets suspicious of Macbeth, Macbeth starts to worry about what he knows, and what he would do about it. He says "And mine eternal jewel given to the common enemy of man, to make them kings, the seeds of Banquo kings!" [ActIII,I,72-75] Here, Macbeth realizes that if something is not done to Banquo, then his sons will become King. ...