Not usually, but I live in nice areas and do a quick judgement through the peep hole. I also have a knife and sturdy flashlight on my strong and weak sides. If someone tried to force their way in, they would get a door in the face. If that didn't work, they'd get an aluminum flashlight to the face, as I transitioned to the knife.
If someone knocked on the door after normal hours, then I'd be answering the door with a Beretta just out of sight.