Then he is dead?

Macbeth's actions of murder and deceit for the crown, was not worth it in this situation. Did he obtain his goal? Yes, he did...but consider how long those benefits lasted. Right as he became King he made many more enemies trying to overthrow him, and eventually a whole civil war. Not only that, but he became insane with the deeds of murder and power, and his one partner in crime, Lady Macbeth, died. If Macbeth had done everything but murder to obtain the crown, then I think it would have been worth it. I feel like Macbeth's insanity is mainly driven by his guilt of killing the King who he swore to and his best friend. Also, if he didn't murder anyone, Lady Macbeth wouldn't have gone insane either...In general, the burden and guilt that comes with killing someone, taking a life, weighs much much more than lying, deceiving, or manipulating anyone.