It's insane.
I was reading not long ago, how First Nations used to set fires every year (long before Euro settlers came along). They would strip the bark of 'undesirable' trees, and the brush, and have controlled burns every year. They made a point to keep a lot of fruit and nut bearing trees (mostly chestnut), and as a result, created incredibly rich forests not only for them, but for wildlife like deer who also eat that food. They basically created a sort of garden of eden, where they had a ton of food, strong trees for building material, and a ruch supply of meat from the animals that benefited from the forest. So simple, yet for some reason, modern day peoples can't seem to figure it out.