Don't forget MRI machines, intensive surgery, sterilization chemicals, etc., that require massive amounts of energy.
MRI machines are hardly the be-all end-all of modern medicine.
Sterilization chemicals? Alcohol, bleach, carbolic acid, betadine, iodine? With the exception of betadine, they're all pre-modern.
Intensive surgery? What definition of energy are you talking about? Take something like open-heart surgery; you think patients are willing to pay $200,000 to occupy the attention of surgeons and nurses for several hours, but you think that
keeping the lights on, running a pump in the heart-lung machine, etc., will put it out of reach?
Again, TFian: a human being on a bike can generate 100 watts. Suppose that a surgery suite requires 10 kW for five hours. You need 100 bikers to keep it going. Let's say they earn 10 hours pay at $10/hr---that's $10,000 worth of electricity. So bike-powered open heart surgery costs $210,000, as opposed to petro-powered surgery which costs $200,000.
(That comes to $200/kWh---2000 times the present-day price of electricity.)
This is exactly what I'm talking about. If you increase the cost of electricity by
a factor of 2000, it still doesn't put a dent in the desirability and value of "energy intensive" medicine.
In my opinion, your inability (or unwillingness) to do this sort of analysis makes you
completely unqualified to say anything worth listening to about life in a petroleum-free future. All you are doing is looking at modern-looking, modern-sounding things and saying "Wow, that sure
sounds too modern for my agrarian vision! Must be energy-intensive too! Out it goes!"