I love nature. But one thing I am forced to admit about nature is that many of the things that make nature pleasant in practice are actually very artificial:

* Clothing and equipment
* Public toilets at most 1km away in city parks
* Paths, trails, roads
* Dangerous animals removed
* Lots of active maintenance

Nature is great. But pure "nature" is pooping in the forest with nothing to wash your hands, then fighting off a bear and then tripping over a branch and getting a wound, and three days later realizing you have a serious infection.

Very hard to determine what “pure” nature is—apart from the fact that we, sentient beings, are nature too, of course. 

Imho “pure, untamed, untouched” nature is a fiction or, rather, an abstraction. There are environments that are more/less accommodating to human needs. Nature is historical.