Attackers would have the advantage even if the victim was armed. It's not like they are going to be sitting on the couch with the loaded gun pointing at the fro

Attackers would have the advantage even if the victim was armed. It's not like they are going to be sitting on the couch with the loaded gun pointing at the front door all day. And shooting somebody if they have a gun, just in case they shoot first, seems to be considered normal in some circles in the US: https://www.bbc.com/news/world-us-canada-69013312 https://www.bbc.com/news/world-us-canada-69013312, so carrying a gun seems like a big risk.