Why does Macbeth slaughter Macduff's family?

By this
point,is unable to be rational in his judgments or to be able to tell good from evil. He seesas
a threat to his future, so he feels taking quick action against him and his family will insure
that any blood line that might threaten his future will be stopped. He doesn't stop to think
about what he is doing. He murders in order to stay powerful and in control. The senseless
murders ofand her son show how muchhas degenerated into a cold-blooded killer. These killings
reinforce Macbeth's character flaws which lead to his tragic end.