Ah, 11th century Scotland: a time when men were men, and women were … either bearded witches, unsexed nags, or dead. (Yeah, did you notice that not a single woman is left alive at the end of the play?) Shakespeare may be known for strong female heroines, but they're not hanging around this play. Not that Macbeth is full of strong male heroes, either. We get a lot of examples of how not to do it, and in the end we're left with Macduff and Malcolm as our role models. So, which one are you going to look up to: the man who left his family to the not-so-tender mercies of Macbeth's murderous crew; or the new king, whose first impulse was to run away?
For Lady Macbeth and her husband, masculinity is synonymous with cruelty and violence.
In the play, women are portrayed as dangerous forces who can emasculate and ruin men.