This is especially true when you are likely to have guns in the home. I'm countries with virtually no private ownership of guns, it is extraordinarily unlikely to be in life threatening danger in your home.
> This is especially true when you are likely to have guns in the home
Citation needed, because I highly doubt you're correct.
Conversely, if people with guns think there's a decent chance you have a gun too, they'll be terrified of any move you make and have a high chance of misinterpreting any gesture you make into violence. So there is much higher tension.
Of course, there is a possibility that you're being attacked by a crazed murderer - in which case you're probably going to die either way. But this happens vastly, vastly less often that robbery.
You can take a look at crime stats from even the poorest European countries. The proof that lack of gun ownership in no way causes more violent crime is evident. Everything I just added above is an explanation of why this happens, but the fact it happens is not up for debate.