Being robbed doesnt give someone the right to kill someone. This is about personal morals, not tit for tat or get off my lawn bullshit. People have absurdly irrational fears that murderers are wandering the streets at night and picking random houses.

Stealing is a cash business, theres no benefit to stealing from occupied homes, and absolutely not for attacking or killing an occupant. Criminals know this, they are just as afraid of people in the house as the other way around, thats why they carry weapons.

The goal is that guns are harder to get, which makes them too expensive for random criminals to carry. Then homeowners can pull their old baseball bat out for home protection like we used to.

Also, if you have people breaking in trying to murder you, you have made some awful enemies then.