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How would infrastructure be paid for? Things like roads, parks, even water, sewer and power?

You have to pay someone if you want those services, if not government then a private provider of some sort. Point is it all needs to be paid for. Even if you choose to live like the Amish you have to pay property tax or your property will be taken from you by force, by men with guns and the power to lock you away until you pay.

It's a nice dream, but in reality you can't just go to a restaurant, dine on the finest meals then skip the check and expect the other patrons to cover for you.

Lol, when you figure out why the concept triggers you, you will begin to understand how deep the rabbit hole goes,....
What part of keep working, stop paying is confusing you?
The road builders will build roads, probably all those unemployed thugs currently screwing up the world, because everybody else continues in their jobs, as well.
The only difference is now you don't have to hustle others to survive, and those that screw their neighbors the best won't be running things.
You can order what ever your heart desires from the web for no more than the promise that you will work productively from the age of 20 to 50.
If you are a bum, expect trouble/hassles from your working neighbors,....
I can only lead you to the door, you only have to be ready to leave behind what brought you to it.