you are out armed.
You see, you can have a knife as a weapon, but what if the intruder has a gun?
OK, you can have a gun, but not automatic
Wait, what if the intruder has automatic?
OK, you can have automatic
haha, here you go, what if....., then you will have to have a nuke to deter any possible intruder, he or she has to think twice to attack you because you have nuke.
The only problem is when the weapon owner does not think or does not think carefully, when s/he is crazy, mad, out of mind....even being challenged.
The most recent study of the effect of "stand your ground" law, though not conclusive, indicates gun related death went up in those states where the law is passed, possible reason is most of the conflicts that can be settle with fists now are settled with guns, with nuke in hand, the impact will be much higher.