I do just love this particular anti gun argument, maybe I am just unlucky, but I know of several people that have been killed in home invasions and other similar circumstances
My step sister's boss was killed at his vacation house in the tropics (I forget which island) duirng a home invasion, I did not know him well, but had met his wife a few times.
The family that lived next door to my mother had a ranch in Oklahoma that the husband would often go to for weeks at a time, one time he went there and a group of escaped prisoners were living in the ranch house, they killed him when he arrived. His wife called the police to go check on him after a couple of weeks of not hearing from him since he left home.
My ex-wife had a co-worker / close friend whose brother in law (husbands little brother) was killed by a group of juvenile gang members while withdrawing money from an ATM in Colorado, they were caught on video, and 2 or 3 were actually imprissoned until they turned 21. I was standing there when she received the phone call.
My step father had a business aquaintance who was the victim of fairly classic home invasion, he came home to find his wife tied to a chair, the burglars wanted money they thought he had hidden in the house, and beat both of them, he gave them what money he had in the house which was far less than they imagined. Thankfully this one had a more pleasant outcome as they were found alive, but tied up many hours later.
I suspect there are more, they just don't come to mind at the moment, Note I live in a relatively low crime area, if it is so rare why do I know people involved in so many.