Not going to stand by and not help. It's worth the cost. Lot of options. Wife backup with shotgun ect. Just because you don't open the door doesn't mean they can't force their way in. Someone who let's fear rule their life has lost. Get armed, get trained, have a plan and make a difference. I have kids and a wife. I don't see the scenario as black or white. If your not prepared might be best to stay inside. If I was armed with wife armed as backup I would be willing to offer my assistance. Thank God cops answer calls to homes that don't belong to their relatives.