[praxeologist]

I stocked up on oxygen in the first place because I had an end—sustaining my own life—and the means for this was, in part, supplying myself with oxygen. Oxygen only ever was considered valuable because of my purposeful human action. It was never valuable "just because" as the concept of "intrinsic value" implies.

You seem to be partially accepting my argument that "intrinsic value" doesn't exist but trying to win by redefining "things having intrinsic value" as "things necessary to sustain human life". Okay, things that humans need to survive are "intrinsically valuable" to that end but that isn't what we're talking about.