Me too. I've got pistols and rifles, but the one I have set up for use in a hot second is the good ole scattergun.
I'm a good shot, at the range or in the field, but if you are awoken in the middle of the night, you might be disoriented, scared, and in the dark - the shotgun is a lot more forgiving with aim. And knowing that, you feel much more confident standing behind it, especially if you're up against more than one bad guy.
Plus, with a shotgun, you have the option of just racking it and putting a round in the floor - that racking sound and thunderous report will clear out most folks and is a decent option if you're not completely sure where the rest of your family may or may not be at that moment. Of course if you are certain of your perp and he's in the next room alone, you don't even have to expose yourself if you don't want to - just crane the barrel around the corner and it's good night gracie.
I use #4 shot - at close range it's just as devastating as buckshot since it's just as much lead and the pattern doesn't have the chance to spread out, but errant pellets won't over-penetrate drywall very well.