>Nothing has an inherent worth, unless you postulate the existence of "worth" as an immaterial label, like "soul".

It seems odd to me that if the utility of anything were a physical thing as measurable as the mass of any physical object that thing wouldn't still have an "inherent" utility/worth. Are you thinking about "inherent" in the sense of have some sort of Platonic existence? That would be a very odd way of using it.

Either way, since utility is unique up to scalling (e.g. Johnny could get as many times of it from a sandwich as Paul does from a near-identical sandwich), at least in choice theory "worth" is closer to having an "inherent" character than otherwise. Though this is somewhat of a stretch because these kind of comparisons are invalid.