I've lived my life by that creed. There is no excuse for being without options when it comes to SD. No matter where you are - in town or in the woods - whether you are armed or not, there is always something that can be a weapon. People just need to pay more attention to their surroundings. Yeah, a firearm or a blade on your person is nice, but it's not the only option. Take a walk thru WallyWorld or the local grocery, and see what's readily available - knives and other pointy sharp things are all around you. Rope. Cables and wire. Axes. Caustic chemicals. Something that is a decent blunt object. All kinds of stuff. When you go someplace look around with an eye towards what can save your butt.