> The value of something is based on the consequence of having one unit more or one unit less, and this will vary according to circumstances.

Perhaps, but that observation may not be comprehensive, there may be other variables involved in other (than your) implementations of ValueAmount(Object something).

> Which ties back to my finger painting. If I lost it on the street and it was found by a street cleaner, or anyone for that matter, how much value would they attribute to the actual finger painting. I think you conflate the value attributed to the physical object vs the value that some others might, or might not, attribute to my subjective sense of loss.

I think you might be conflating your opinion of how things are with how they really are?