Different people are different I guess. Extra expense and inconvenience also wouldn't bother me. Instead I'd be worried that one day this guy is going to kill everyone while we're sleeping. How well do you really know someone? How well do you really know someone that just showed up at your door days before?
I dont think that's a useful way of thinking.. A well known family member could also randomly kill you. Either one is extremely unlikely.
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Sure, but in France we have about 100/150 feminicides per year. You're much more likely to be killed by your (seemingly "sane") partner in a bout of fury over a breakup than by some random autistic guy
“Overall, 76% of female murders and 56% of male murders were perpetrated by someone known to the victim.”
https://bjs.ojp.gov/female-murder-victims-and-victim-offende...