Macbeth - character view II

My view of Macbeth having now finished the play has changed dramatically. He started out courageous, patriotic and brave and ends as a cruel, perverse dictator. Macbeth becomes cruel and perverse because of the three witches who at first treat him as a plaything but when Hecate - who I see as the devil - tells them that they mustn't mess with human affairs and that they have to end it all they set about planning to have him killed through others. After "Great Birnam wood to high Dunsinane hill...come against him" Macbeth realises that the only person who can vanquish him is "the thane of Fife". He is not "woman born" and therefore fits the job application to kill him. But Macbeth, to his crebit, does not run and hide but stands and fights against the only person who can kill him. My mother told me that when a character opposes the gods and thinks themselves more powerful than the gods, the natural order of the world is upset. She also told me that when the character dies the audience experiences catharsis.