So, you think that if they catch you home of catch you witnessing them, that they will not OFF you?
When the possible repercussions are well known to the criminal, usually they just don't try to enter ones domicile.
But, I like to see them suffer while I wait on law enforcement to eventually arrive, hence I have places in my house that I can shoot them while they are still outside with this:
And again & again, as needed. I'll enjoy the 20-60 minutes that it takes law enforcement to arrive. Bad person gets punished more, the longer it takes.
Since they did not die, no repercussions
Thus: no harm, no foul.
But if they manage to get in, I have to presume that they are not there to help me or my family, all bets are off: