So does that mean you should keep your home defense gun with a round chambered? I've never felt comfortable with that, I probably haven't been using my guns enough to feel that way yet.
Guns go off when people put their "booger picker on the bang switch." A gun in a holster won't go off. A gun on a table won't go off. A gun in a drawer won't go off. . . . . Put a person's grubby fingers in the area, and the gun might go off. If you drop a gun, let it hit the ground. Grabbing for it, might pull the trigger.
My HD weapon is point and bang. With a couple extra magazines just cause if things go really bad.