I don't know if you are talking exclusively about other people or if you might also hesitate so let me explain the facts of life rather than death:
If a man/zombie/bad guy/crazy woman, is trying to get in your house, that person will kill you - you had better assume that right now - and shoot that person immediately upon seeing “it” and if you can shoot through your door (and most doors aren't strong enough to prevent bullets going through), do it before the person gets in.
If you cannot shoot your weapon, get rid of it now because the bad guy will definitely kill you if you have it in your hand and can't use it. A weapon's purpose is to kill something, not to be an ego lifter.
i thnk one underestimates police and military folks being potential threats. selco’s articles discuss in shtf ex-police and military leading/forming gangs and being formidable problems. obviously it depend on personal character b/c mnany would be trying to help groups preserve order/help people defend themselves against gangs,m etc, but if they were immoral folks and desperate they’d be a problem.