LOVE IS BLIND

Lady Macbeth is just evil. There is no part of her that is salvageable..it's just all bad. Yet despite this, Macbeth is still with her and has thus far not spoken badly of her or opposed her. Hes a fierce man of battle but allows himself to be manipulated by a woman. She forces him to do things against his will because of her ambitions. Macbeth does it all. He is also ambitious but his ambition is tamed by his morals at times. So we could make the reasonable conjecture that he allows himself to be manipulated by Lady Macbeth because he loves her and wants to keep her happy (appease her). Love really must be blind then.

Now us as the audience, we see Lady Macbeth for the real monster that she is. Shakespeare has thus far presented her in a way that would only lead to hate from the audience. He uses her own words to corrupt her. The most obvious example of this would be when she's scolding Macbeth for wanting to back out on his promise of killing King Duncan and she tells him that keeping ones word is important and that she would kill an infant if she had promised to do so because she keeps her word. Now, Shakespeare could have used any other example but he uses this particularly gory one only to add to our hate and disgust with her.