Greetings:
I'm happy to be told the truth then. Please continue.
The value of the dollar is not based on taxes. The value of the dollar is based on supply and demand of products and dollars.
If we had exceptionally little food, the dollar would not buy much food. If we had a surplus of dollars, it would take many of them to buy food in a normal supply situation.
You mentioned gold as if it had some inherent value. Gold has no inherent value. Gold has value based on the supply and demand for gold. Its value varies drastically with perceptions, just like that of the dollar.
The value of anything is what another person is willing to exchange for it. It's likely you work a normal job, and get paid a certain number of dollars for a certain amount of work or time. You exchange that work or time for the dollars. If you want more dollars per work/time, you make your work/time more valuable to someone else and take a new job. Similarly, if you want to eat, you choose things that the dollars you got for the work/time will support, as balanced with other things you may wish to have (like a house, or a car, or a vacation).
Back when there were one-income homes as the norm, one income supported homes and the standard of living that was "normal" for most. When the norm shifted to two income homes, suddenly the cost of everything went up to where one needs two incomes to have that same standard of living. That is to say, the general supply of dollars went up, so the value of it (in terms of housing) dropped.
This would be true whether we were paid in gold bars, or chocolate chips, or dollars. We agree the dollars have a value based on the supply and demand of the dollars and the supply and demand of the things we wish to trade the dollars for.
Welcome to the Grand Illusion. But, it's really not an illusion, it's reality.