" If someone comes to your house with a gun and you do not have a gun, who is likely going to be a likely winner?"
Umm, lemme think, now, what is this, 3 guesses and the first two don't count? Hey, I don't like the 2nd amendment for so many reasons. I won't bother with my list, but suffice it to say that because of it I have a firearm in my home for my defense. The 2nd amendment should NEVER been written as a choice, but rather as a LEGAL REQUIREMENT as a right to LIFE.
Law Enforcement, by default, is not capable of defending any and all. The ultimate requirement for self-defense, from the cave-man days has ALWAYS been that the Cave-Man defend himself in the best manner in his power. I suggest that THIS is REQUIREMENT is MOST important,