Assuming:
1) We stay sane.
2) The country isn't destroyed by war, famine, plague, revolution, etc.
3) We both get horribly ill and get scared enough to decide to bankrupt our spouse and our daughter (who has Down syndrome) instead of dying more expeditiously. And even then, many illnesses or injuries would still allow us to relocate to some country where medicine is reasonably priced.
We own 8 houses at the moment (5-6 of which we are keeping) and all but one of them is fully paid for. It would take one heck of a natural disaster to destroy or make unlivable all of them as they are spread out over our county.
Even if we did, we could just go buy a house for cash pretty much anywhere that prices aren't insanely high.
We have 3 different social security income streams, 5 different rental house income streams, 2 different farm income streams, plus a very sizeable stock/bond stash that's held in multiple institutions.
So, no, not really.