I do. I keep a cheap sawed off (but legal...) 12 gauge single shot rossi loaded with triple aught buckshot in the top drawer of my tool box.
Had a not so nice gentleman walk into my shop while I was working at the workbench. About 9-oclock at night, I had the big roll up door open because it was warm out, and was working on the work bench which makes me put my back to the roll up door. Not a single noise at all. I was deep in my work, and all of a sudden I hear "Hey man, give me a lighter". I swung around.... ******* terrified - honestly. Had no idea the guy was there. He was no more than 10 feet from me. He was pretty beat up and rough looking, I told him I didnt smoke and that he needed to beat feet. Started giving me some lip, and I show him the business end of that little 12 gauge. He backed out, and walked away.
Not 20 minutes later the police are cruising real slow around my neighborhood. I flag one of them down and they are looking for this guy. Apparently he had just gotten into a fight with his old lady and was on the run since he beat her up pretty bad. I heard a few months later he was back in prison...
I didnt sleep much that night.