Technically speaking, one could theoretically survive solely on a single job right now in the modern day. This would keep you biologically alive, but for most people, this is a degrading, unfulfilling existence. Which

What do you mean with quality of life? Remember people will only get their basic needs met. If they want more quality they have to pay for it and thus have to work. So the rest should be figured out by the free market (even better than now because labor market isn't free if people have to work to survive). Of course there will be a certain percentage that is okay with just surviving but I am sure their needs can be met by the taxes of the overwhelming amount of people who want more than that.

Removing consumers from a consumer economy does what exactly to that economy?

The moderate(ish) Evangelical right will often agree no one should go hungry but believe it is the church's responsibility, not the government.