Welp, if you can convince almost eight billion people to pretend it's 1725 that could work, but I think that's a hard sell.
I'll say. Life expectancy in the EU was in the low 20's. Yikes! (ref
here)
The other gotcha with going Amish on a large scale is a biggie: Methane. All those horses and cows aren't going to be greenhouse neutral.
End of the day, there is no free lunch. Do the best you can to live efficiently and move on.
