I did everything I could. You know that
Kneel before me, lay your sword at my feet, pledge me your service, and you'll rise again as Jon Stark, Lord of Winterfell
Brave men, all of you. Butchered a woman pregnant with her babe. Cut the throat of a mother of five. Slaughtered your guests after inviting them into your home. But you didn't slaughter every one of the Starks. No, no, that was your mistake.
I'm sure cutting heads is very satisfying, but that's not the way you get people to work together