However, that is not what politics is (supposed to be) about. It is supposed to be about actionable policies and their effects. When putting this into an actionable public policy you run into many problems. How are you going to police the "except if they cannot work themselves" part? What are the requirements for "not being able to work"? How lenient are you there? What happens to people that fall through the cracks because of mistakes made in policing that (i.e. people that cannot get a job, but do not qualify for the help)?
How much money does it cost to police that, and what are the costs of not policing it at all? If the cost of policing is higher than the cost of not policing and just accepting that some people will take advantage of the system, is it still a good idea to police?
You can also contribute to society in ways that are not defined as work. What happens to someone that is taking care of children, or taking care of their sick parents? Should they be assisted financially, or not? If so, how do you define that?
Then there is the issue of automation. Perhaps people are not entitled to the fruits of other people's labor. But what about the labor of machines? As more and more jobs get automated, who is entitled to that? Should the owners of the machines reap all of the benefits while the rest of society is left with less and less as more and more jobs get automated away, or should this be divided amongst the total population?
Different people will answer all of these trade-offs in different ways, even if they may agree on the core view. Left-wing and right-wing people generally share most of their core views. Nobody wants more crime, more poverty, etc. The implementation of these policies are where disagreement and discussion happens.