What things do I have faith in?

[Zazzy]

Strictly speaking, no money, not even solid gold coin, has any intrinsic value. Paper and electronic money work because of a basic reality of economics: anything has value as long as someone else is willing to accept it in exchange for goods or services.

It isn't like religious faith because you can test whether a good or a service has value by offering it to someone and seeing what they are willing to give you in return for it.

OK. I'm not sure if I believe my own point, so I'm going to argue it and see if I do.

My thinking is: the ONLY thing propping up both gods and economics is belief in something that is not real, and has no intrinsic value. Only the belief (faith) that your money will buy you something makes it valuable to you. The fact that we all share the faith- that the guy at the store believes it, too, and will take it in exchange for a good- would seem to further the religious metaphor: people prop each others' faiths up in gods and in money- but it is faith. There is no evidence that money is valuable or real EXCEPT THAT WE BELIEVE IT. There is no evidence that god is valuable or real EXCEPT THAT BELIEVERS believe it.

Is that full of shit, or does the argument hold?