Saw this video in another thread, which reminded me that I want protection. Then again, my building has locks made for businesses. I locked myself out of my apartment two weeks ago. Two locksmiths failed to get me in. The first tried for three hours. I had to keep waiting until my roommate arrived with his key. Might be good to have a gun for weirdos on the tram to and from work, but my workplace doesn't allow weapons on the premises, so that's not happening. If I lived in a house, I would definitely get one.