FINISH HIM

Why doses Shakespeare choose to conclude the play this way? When Macduff kills hamlet. The people feel relief once Macduff holds his head. He is seen as something dangerous and leading to more destruction. There could be many reasons why Shakespeare put it this way. One is that showing Karma can bite you in the ass. Another reason can be that leading to the wrong path will bring you nothing but bad luck. Clearly Macbeth started to grow his ambition more and more to kill the king and then sets to kill the kings sons. Another reason can be that he just likes this whole drama to make it more interesting.