Stephen, I understand.
I was only pointing out that this particular thread was dealing with when there is already someone in your house.
But, I absolutely agree that your first 1st, 2nd, 3rd...etc, lines of defense should have to be breeched before it's time to employ your DA/SA skills. Simply relying on your nightstand gun is a sign of being ill prepared.
Not all lines of defense are plausible, affordable, or practical for all living environments, but one should do what one can based on one's lifestyle, living conditions, and budget – in addition to firearms and training.