Bogus equivalence. Guns are made for killing. I hope your car isn't. And since assault by firearm is so rare, I guess you've made my argument for me. Your gun should be kept at a shooting range since having it around the house is dangerous and, as you acknowledge, pretty unlikely to be involved in a Rambo-action.
Hey, if keeping a gun makes you feel less afraid, by all means, own one! If you guys were honest, it's fear of some bogeyman breaking into your home that frightens you. 
Myself? I have many other means to protect myself and my family. None of them involve risking my neighbors' lives with stray bullets or making me constantly aware of being armed. What a horrible way to go through life.