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.