In my personal opinion, I would not in the least fault the eldery gentleman for his actions. After all, if some individual who is not known to me comes knocking on the door(outside of either the UPS Deliveryman, or Pizza Delivery) I too would have become suspeciou and no doubt readied a firearm. In this day and age, it is better to be safe then sorry
How can you possibly consider
anyone you do not know personally or from common rendezvous to be a threat to you based on no other facts or
anything conclusive whatsoever? This is a saddening example of how extreme paranoia and fear of anything unknown is a standard amongst a lot of people "in this day and age".
...and to be honest, you should never knowingly violate someone's property unless you have notified the owner that you are comming over. The most important reason to have a strong entrench castle doctrine, is to protect the citizenry from potential harm. Also in all my lifetime, I have never once randomly knocked on someone's door to ask directions(its better to stop in at Speedway, or BP and get directions there). Its always better to have a good entrench home defense law, then to have lax laws, and allow criminals and deviants to victimize our citizenry.
Picture this scenario: an impressionable 12-year-old is riding his bicycle, exploring more of the town he lives in. He's cycling down a road he's never been down before, unsure of how he got there. He decides to ask one of the neighbourhood whereabouts he is and how he can get back to town, so he knocks on the nearest door. The owner proceeds to scream in the childs face for "violating his property" and viciously throws the kid out of the doorway back onto the pavement.
Is the child going to continue knocking on doors to find his way back? Of course not, he's completely shaken and just wants to leave. He'll realise that this is the norm in the town he lives in, and will eventually meet an unsuspecting passer-by in his own doorway with a friendly bullet to the face for asking directions to the nearest store.
I understand why you feel this way, and i'm not trying to judge you. It's this mentality I'm judging. It isn't healthy, people need to learn to be able to at least
accept the other people around them, and maybe try to think a little more clearly before judging others so rashly. One life, live it? If that's the case, people have lost theirs over things like this. Lacks in morals, eh?