Mistaken identity

This is a direct quote from today's The Daily Telegraph: "A man, 46, was shot in the neck after he opened his front door to two men wearing balaclavas." Now, wouldn't you think that you would never (except if you were in the middle of a fancy dress party, and then you'd probably be wise to think about it) open your door to people wearing balaclavas. Rarely are they up to any good. Of course, it may be that the man did not have a "peep hole" in his front door, or a chain on the door, or any other precautions - like asking "who's there" before opening the door - but perhaps its just a function of gender. Maybe men are more likely to open a door without knowing who's on the other side. (The attacked man is in a serious but stable condition in hospital. Another man, sleeping in the house at the time of the attack, was not injured.)