There are always individual counterexamples. And yet as a whole the cost of healthcare has exploded.
> at least some of that is affluence meaning we choose to eat out instead of cooking at home
A lot of that is poverty, not affluence. People working two jobs and living in food deserts aren’t cooking a lot of meals at home. It’s expensive being poor.
> People working two jobs and living in food deserts aren’t cooking a lot of meals at home
The percent of people with multiple jobs has declined over the past 30 years: https://fred.stlouisfed.org/series/LNS12026620 (longest time series I could find)