Well, in a small community there are 2 schools of thought.
1) The hassle of locking/unlocking your door when the odds are extremely remote that anyone will come around. If someone does come to your door; odds are fair that a neighbor saw an unfamiliar or familiar person go by.
2) You are so remote, that if the door is locked, they will simply break in. No one is going to hear a farm door getting trashed - no one around to hear it. So, now you have a broken door/window, on top of what ever was stolen.
Times have changed, unfortunately. Isn’t diversity grand?
I can relate with #2. When hunting in South Texas we would always leave our camp unlocked and bread and water on the counter when we were gone for extended periods of time. Otherwise there was a possiblity of illegals breaking in and tearing the place apart looking for food.