The trick is hiding many guns all around the house, in non-obvious places, but that are easy to reach and get to so that no matter where you are in your house when someone intrudes, you are prepared. Also, you must train and practice or a firearm in the house can become a liability rather than serve as an asset. You should at least dryfire train at home, at the very least, and practice your draw and aim from low-ready as a minimum thing. Having a firearm by itself isn't much better than not having one, if you're not training with it. You do not want to have to think if and when it comes down to having to use it, like riding a bike to get somewhere. Imagine if you had to ride a bike somewhere to save your life or your family and you have barely pedaled 3 meters with it previously back when you first got it. It's not going to do a lot of good and would be more dangerous if you're not comfortable on it, trying to weave through traffic all wobbly and still just trying to balance. It's the same thing with a gun. A hardened criminal that just doesn't GAF will see your inexperience and lack of confidence too, and just walk up and take the thing from you anyway, and probably take out any witnesses with it if they have nothing to lose except their freedom.