The best book I have read about collapse (perhaps except the one by Jared Diamond) was
"When money dies" (pdf link). And the city dwellers did raid the farms.
But now the economy is global, supply chains are long, no country and no city is self-sufficient, and everything depends on high maintenance items - computers, satellites, the power grid, dams, nuclear plants. Agriculture depends on technological support. The population is dense. Even if no nuclear war happens (with India starving/becoming unlivable, will they wait quietly for death?), the chances of survival for a city dweller are nil. No food, too many hungry people. Highest survival chances are for those who are the most isolated, living in some forest or mountain or grassland, in low pop density countries, and growing their own food. Solar panels a plus.
Get away from high density countries, especially those in hot climates. Move somewhere isolated and empty. Patagonia? Canada? Wisconsin? Portugal? (Really I have no clue). Is it worth it to give up your current relatively good life, in order to increase survival odds from 0% to 20% in a world not much worth living in? I doubt it.
Don't expect hospitals, airports etc., when civilization is too complex its unwinding will be terrible. In 1500 or 1900 or even 1942 people were much more self sufficient, much less dependent on technology and imports of necessities. In 2040 or 2050 WTSHTF most people will be useless and hopeless in the face of a sudden collapse. It's not as if they will be told to prepare a decade or two in advance.
BTW Rich - I think you are an optimist of sorts, looking at your assumptions.