I really don't worry too much about people coming to my door. My house is about a half an acre away from my front gate. I have 2.5 acres with a 6' fence around the whole property. If someone is stupid enough to open my front gate without invitation God can only help them. I have $ big dogs that don't like people. If someone decides they want to break into my house I won't have to feed my dogs for a couple days and they'll have bones to chew on for awhile.
I feel sorry when I hear about good people that have bad things happen to them.