1 out of 10 people that come to your door try to kill you? Rough neighborhood...I am not one of the live in fear folks. It's common sense to me. 9 times out of 10, it's kids selling candy or the idiots selling meat from a van here. I live in a good area, though. YMMV. *I* just don't want to be bothered with nonsense. I'm an introvert, though, so you might be talking to the wrong guy.
Not venturing out of the house is a whole different thing. The problem we have is the treatment, or lack thereof actually, of mental health issues. Fix that and these mass shootings and such drop dramatically.