(OK, fine the dollars aren't real either, but what they can buy is.)
As a semi-philosophical aside: in what capacity are dollars not real, but the things you can buy with them are?
Since everything seems to be a means to an end, from glamour (gets you money), to money (gets you food) to food (provides energy to your cells) to species (reproduction, evolution) to more efficient use of resources, all accelerating the universal march toward the heat death of the universe.
At which point do things in this optimization chain become "real"? What makes a specific segment "not real"?