some you can shoot the bg just for stepping foot in your house
I don't think Lupinus was advocating shooting people with guns.
If not a gun, then shoot them a... smile? If you can seriously articulate that said entrant was in fact a bad guy, who came into your castle with no invitation, with nefarious intent, who has the ability to DO YOU HARM, then defending against them with anything less than lethal force could very well put you in jeopardy ("I fear'd for my life").
Home invasions, seemingly becoming more common as of late (actually an old established cave-dwelling habit of hit and run from days gone by) MIGHT be about property theft (drugs and/or money... maybe guns/cars/electronic equip) or it MIGHT be about your daughter/wife/sister/mom. Or you. Who's going to sit still and ask polite germaine questions?
On the other hand, coming home and finding your back door ripped open, your TV set gone (or even your gun safe blown open) and seeing the south end of a north-bound ner-do-well beating tracks thru your back yard whilst lugging heavy arcania formerly housed in your domecile... two different things totally.
In the latter case, it seems that the law, as written, favors criminal behavior (I was told years ago that for each B&E the Cops actually bust, some 254 other actions occur... isn't that nice?). "10 guilty men walk free so that not even 1 innocent man charged, yada yada yada"
Harden your home to some degree, prepare yourself to defend life and limb, don't worry about the small stuff (and realize if it's not life and limb, it's probably all small stuff) and go about enjoying your life.
Really.
You might also want to do everything in your power to stay OUT OF THE LEGAL SYSTEM in any way, shape or form, unless you decide to make it your chosen field or profession, in which case, should you choose to ride wi' the law, you'll oft-times find yourself ham-strung by legal arcania thrown into your path by well meaning (?) black-robed justices and legislaters who sometimes don't have a clue as to what's really going on in the day to day life of the people on the street. Nor do they care. As long as they check the power of the Police (which might be a good thing in a way, if one thinks about it for a moment) or make it as difficult as possible for Joe Citizen to take matters into his own hands. They all seem to want you to have some form of lawyer to interact on your behalf... if you think about "Law" for more than a minute or two, you know why.
It'll only make you bitter and cynical. Kinda like the dry comedy we call politics.