I think this skips the biggest source of tension in my household with regards to money. The only way I know to describe that is 'it's worth less to you than to me'.

For instance, I would tomorrow gladly outsource the entirety of our laundry work to a service. It would be much cheaper than other monthly expenses we have that I value much less highly. But my wife has shot that down. She has all manner of reasons why its not a good idea and none of them are related to the bare economics of the problem.

As academic economics has found, so does my family, the models need to be sensitive to lots of data that is not captured in price to make reasoning about these things workable.