a moment of introspection here will show you that, in fact, this is about as close to the truth as you're ever going to get. all economic theory is storytelling. you happen to like some particular stories better than others, and so you choose to believe them (and even repeat them as though tehy are true). but they are not True in an objective sense. there is no scientific experiment that can be constructed to test these claims which would satisfy the skepticism of a critical rationalist inquiry.
that's fine. i believe (or act like i believe) lots of stories that i can't prove the truth of, which are actually unprovable. we all do. just don't try to pretend it's science.
can you see how your want is not quantifiable? how much did you want a hamburder? could you have wanted it less? would that have decreased the supply? this is pure storytelling.
I just quantified it, why would you say I didn't? Everytime I wanted a hamburder I supplied one to myself. There were no degrees of wanting at all, I either did or didn't.
And this isn't storytelling, this is literally what happened. You're the one trying to muddy the waters.