On the one hand I think it's worth specifically "buying for life" [1], eg buying high quality, durable things once and reusing them indefinitely. Reject our throw-away culture and planned obsolescence, be more effecient and less wasteful with natural resources, recognizing that unless you plan to be a full-on monk you will most likely need to buy some things in life.
On the other hand, statements like this strike me as narrow, lacking perspective. After hiking for months across Southeast Asia, I do hope you have more take away than:
>These might seem like stupid things to worry about, but when you have trust in everything you own, you don’t have to worry about anything. It’s liberating and an amazing feeling. My life was markedly better because of it.
No, what is amazing and liberating is transcending having to trust in things at all because you have such relentless resourcefulness, determination, and physical and mental health that it doesn't matter whether you have every thing you need, you can make do without it. You can, as the US Marines put it, improvise, adapt, and overcome [2]. You're not dependent in any way on what you own, and as a result, are not owned by it [3].
So I think there's a bit of yin/yang here. Of the stuff you must buy, buy high quality for the long haul, but don't become so attached and emotionally invested that it ends up owning you.
[1]: http://www.reddit.com/r/BuyItForLife/