There a few people I know who live off grid, they all say the same thing. The longer you are out there the closer to 100% you will be challenged for your stuff. Be it a semi-local crazy, warlord, gypsies or cult few have heard of - they all want resources that are closer than the alternative and they are aware that you are the only defense.
Another factor of this living is that once the honeymoon period wears off, there is a dawning on many people that their tolerance for failure has dropped significantly. A break down of a vehicle can become a very big issue very fast when the nearest town is an hour away.
This is certainly a concern. I'm early 50s now and have no medical issues or physical limitations (ok, aside from fatness). I'm pretty handy. I can fix what needs fixing. My tolerance for problems and delays is high. But it won't be long before I start falling apart and will want to be closer to medical resources for myself and service providers for my stuff.
I'm not looking for a forever home. I figure I might live in the middle of nowhere for a decade or so and then who knows. Maybe move closer to town and have a nice place to visit part of the year.
I know a couple that lived off grid and made it work for a long while. They only had to give it up in their early 80's after several decades on location. Not a bad way to be. The thing that did them in was failing health and they needed to be closer to medical centers.
Another factor of this living is that once the honeymoon period wears off, there is a dawning on many people that their tolerance for failure has dropped significantly. A break down of a vehicle can become a very big issue very fast when the nearest town is an hour away.