You say obviously people will be non-productive and lazy, and I understand why you might think that, but studies so far seem to indicate that this won't be typical. People may do voluntary work, or may return to education. There are a lot of potential benefits.

I agree..When people get more time in their hand they are bound to think and act creatively..Crime rates can be reduced as the major source of them is poverty.(Im not generalising..In Somalia poverty is a reason,But in USA we cannot relate poverty and crime!)