Put your money where your mouth is: you can still live without industrialization. Find some wood, build your hut, and go for it.
Come back in five years and tell us how much you hate industrialization. If you haven't "efficiently died", that is.
Granted, here we'd still be if half the population was voluntarily leaving modern society.
In any case, you can get together with a group of friends and live the way you imagine. There are enough people who dream of that kind of lifestyle, that you should be able to find a group that is large enough.
Not to mention that in many areas, it's not possible to make life by hunting and gathering because biodiversity in the natural environment has been destroyed. So, it's not really possible as you say.
Even though it's not really possible, such bullshit is worth giving a bit of thought, at least.
As for suitable areas, there are still undiscovered tribes living in the Amazonas. I think you may still be able to find some places where you can live your dream.
But even if you believe it will - what's the point to anything? In the end everybody dies, no matter what you do.