Good stuff TW. Your passion for Nature is truly appreciated. Your pts are certainly commendable and valid.
TW, people can embrace 'Mrs' Nature taking different approaches equally as valid as yours. I recall you nicely reminding me of the same thing. We don't all arrive at a deep love of Nature " getting it" having taken the 8 yrs squatting on land in a teepee approach although personally speaking that sounds truly awesome. Consider Native Americans had a deep respect and intimate living connection with Nature as seasonal roamers.
TW, you asked "Why just those thirty days?" I think Gbolt and yourself answered your question when you wrote: "The crazy thing is that the treatment is only found in returning to nature for short periods of time to allow re-entry into both worlds at once!" and specifically yourself, "...you don't have to live outdoors permanently to love what's left of wilderness."
We're getting off topic but what may help is to consider adopting a worldview that humanity is not separate and above the environment and Nature but an integrated part of it. To appreciate and experience the natural environment and Nature it does not have to be devoid of humanity. I think that's one aspect of what was being stated here:
“Humankind has not woven the web of life. We are but one thread within it. Whatever we do to the web, we do to ourselves. All things are bound together. All things connect.”
― Chief Seattle
“When one tugs at a single thing in nature, he finds it attached to the rest of the world.”
― John Muir
“Conservation is getting nowhere because it is incompatible with our Abrahamic concept of land. We abuse land because we regard it as a commodity belonging to us. When we see land as a community to which we belong, we may begin to use it with love and respect.”
― Aldo Leopold
“Civilization has so cluttered this elemental man-earth relationship with gadgets and middlemen that awareness of it is growing dim. We fancy that industry supports us, forgetting what supports industry.”
― Aldo Leopold, A Sand County Almanac and Sketches Here and There
“The last word in ignorance is the man who says of an animal or plant: 'What good is it?”
― Aldo Leopold
“The tree which moves some to tears of joy is in the eyes of others only a green thing that stands in the way. Some see nature all ridicule and deformity... and some scarce see nature at all. But to the eyes of the man of imagination, nature is imagination itself.”
― William Blake