If affluence is a sickness, then what is its cure?
Perhaps recognizing the essential "nature" of human beings, most first-order spiritual leaders (Buddha, Christ, Ghandi) said in one way or another that "earthly wants" or "attachment" is the cause of suffering. Non-attachment, and building a spiritual base rather than a material base, they said, is the cure for suffering. [Insert your own favorite spiritual quote to support this statement.]
I fail to see how the pursuit of lightweight backpacking, which requires the purchase of high-tech gear made using ultra-industrial processes (titanium, aluminum, Spectra, Cuben, silnyl, polyurethane, PTFE's, carbon-fiber, computer chips, etc.) and the transportation to and from the trail head in a combustion-engine vehicle---for the purposes of recreation---is in any way consistent with living a simple life!! (Green living it ain't!)
Real simple living means living like the Amish or the Mennonites: growing your own food, making your own clothes, building your own homes from native trees, taking care of your health every day so that you need little medical care. It means having few/no earthly desires, so no need to travel except to market.
When your life is rich within, there is no need to seek without. Go backpacking in your mind! That's ultimate light-weight.
As for me, I'll rely on the fruits of civilization, capitalism, and industrialization to help me on the path to "enlightenment." After I clean out my closet...