I think it's sensible to buy something that tells you which way the gun is pointing in the dark. Hell, you need that on a can of deoderant!
GD, on the subject of whether gun owenership reduces property crime I'm finding I can disagree little with your conclusions based on the facts you have observed. As Alan says this makes it almost imperative that you track down these figures.
However, I would ask you to consider my observation that well-trained, regulated gun owners would make a more effective deterrent to both criminals and government, and be a smaller hazard. I really cannot retreat from that position yet.