I'm pretty sure I could, but then again, I was raised by an ex military father and ex police mother, my mom pretty much told all of us that "If anyone ever breaks into the house, aim to kill, not to injure. It's easier to deal with that way."
I stopped watching one of those scream movies when the killer was passed out in the front seat of a police car and the two people just crawled over his incapacitated body instead of fishing around for his knife and plunging it into his throat... it was just too stupid.