Badgersmilk appears to be a fixated idiot.
For starters we are not talking about a "Retreat" that you visit on vacation and only move to in the event of a disaster, We are discussing SELF SUFFICIENT HOMES. The older people here who listened to the stories their parents and Grandparents told know that during the Great Depression the only rural people who suffered more than a lack of cash money were the ones wiped out by the "Dust bowl" which was a coincidentally timed but unrelated event, not likely to be repeated. Otherwise people in the country ate well, and got by on barter.
Another thing he overlooks, is that it is only "city people" who don't know the folks around them. As an example: I live in a 6 unit Apt. building, of the 10 people there I only know 2 of them by name and only talk to ANY of them if we meet in the door or hallway. I don't work with them, I don't meet any of them when going about my business, and we don't meet up at local events like the fireworks or parades. When I used to live in Maine however I was acquainted with every one for a couple of miles around because the smaller population led to more interaction, because there were fewer places to go there fore more likely hood of meeting the same people, limited job market and entertainment possibilities increased the likely hood that you had worked with a particular person or met them at the store or restaurant. The more widely spread the population the greater the likely hood they will band together for mutual benefit
Next, "putting up a gate says food and stuff here" That statement tells me you don't have much imagination. Or possibly you have never heard the term "preparing the battlespace" there are many ways that terrain and other natural features can be used to channelize traffic for control purposes. Think you're going to just "barrel up my driveway ? Easily home made spike strip will slow you down and the Maple and Walnut trees and drainage ditches will keep you from going around..them.
Personally I've put a lot of thought into "Dual use" landscaping.Since I'm not much interested in raising animals I see no need for Barbed wire, It's way to much work putting it up and it won't keep out what I want kept out. Blackberries, or Beach Roses are far more effective, less work, and a source of food and booze.
The absolute most important considerations for a home are sufficient fuel ( Cooking, heating,light, and transportation) water supplies, and adequate sanitation facilities.