I've been shooting all my life, and I have kept a Glock under my pillow for many years now. I sleep every night with it. I've known two people who have awakened at night to find an intruder in their bedrooms. In one of the encounters, the intruder was actually holding my friend's gun (that he usually kept next to his bed at night) on him (!) The only way around all this is to learn to sleep with a gun under your pillow, which I did years ago. I have always sworn by a handgun for dealing with a threat in my house, primarily because I am quicker and more maneuverable with it. However...
A few months ago I had an I Might Have To Kill Someone Moment in my house. It was about 9:00 p.m. and I was in my back bedroom (which is disjointed from the front part of the house) watching TV. My wife came in, with genuine fear in her face, and said "There's someone in the garage." My garage is attached to my house by a door, the garage is usually kept locked (along with the gates on either side of my house), and there can be no doubt that someone in my garage would be there intentionally - with bad intent. In other words, any intruder would have to breach a locked barrier to get into my garage.
In addition to the Glock under my pillow, I often keep an 870P next to my bed. I grabbed the first thing I saw, my 870P. I didn't even think about looking for the handgun; I just grabbed the first thing I saw. I checked to make sure it was loaded, disengaged the safety, and wen to the "threat". As I went down my hallway to deal with the situation, my wife was behind me, and I heard her say, "I knew this was going to happen sooner or later", which was surreal. Anyway, the "threat" turned out to be nothing, thank goodness.
Long story short, as I was heading down the hallway toward what I thought was a real threat, the thought of having the heaviest hammer possible (a 12 gauge) flashed though my head and made me feel very, very good. It gave me comfort to know I had something much heavier than a handgun, that would stop the threat as fast as possible. I literally felt a warm fuzzy feeling coming over me because I knew that I could finish the fight AS FAST AS POSSIBLE. This really stuck with me big-time. The idea of a one-shot stop was very heavy in my mind, I wanted the fight to end as fast as possible, and the knowledge of having the ultimate stopper comforted me and calmed my nerves. This is huge. Whether it was a false comfort or not, the fact is, the calmer you go into a fight, and the better you keep your poise, the better off you'll be. Grace under pressure. And the shotgun really helped me with this. I was surprised, as I had never pulled a shotgun in anger before.
As part of my shooting from here on out, I plan to train shooting a shotgun one-handed. Because my hallway is so tight, and the doorway to my garage is so narrow, I had to hold my shotgun one-handed, muzzle down, or run the risk of bumping the muzzle into something. This would have been bad. I don't plan to signal my attack if I can help it. I'm not one of those pump-the-action-and-scare-the-bad-guy-away guys. Screw that. If someone is a threat to my family or me I intend to strike before they realize it. In this particular situation, the quietest way for me to have done this was to hold the shotgun one-handed at my side and just raise it up like I'd raise a handgun. Open the door with my left hand, raise the shotgun with my right, and shoot.
Long live the 12 gauge.