Indefinitely, but significantly less life expectancy than if it didn’t happen.
I’m relatively well set up and experienced for that kind of thing. Don’t get me wrong, it would suuuck. But I think we’d be okay. I personally would probably not live as long because living rustic is fucking hard work and my kids are still too young to help much. We’d have a rough time of it, but I am confident that with our help my kids would figure out how to thrive by the time my health is failing. So yeah at least another generation or two seems likely even though I doubt I could last more than another 10 or 15 years living that way. Especially given that the first few years would be the hardest.