They say there are only two things that are for certain in life - death and taxes.
Simple question. I live in the United States. For my most basic needs, I have to spend money. What if I don't want to have a job, what if I don't want to participate in "money"?
There is one way to get out of money - being homeless. You can't really "own" a piece of land. At the very least, you must pay property tax on land. So really, it's more like leasing. Even if you do "own" it, imminent domain can take it away.
So, unless you want to wander around homless (and many do), you have to participate in the system.
The question: how is this not slavery?
Albeit a very comfortable form of slavery, I can't see how this is not an evolved form of slavery.