> prevent idleness, which in turn keeps things like crime down
This, this right here is exactly the kind of puritan thinking I find infuriating.
Seriously, leisure as a terminal negative term in your utility function?! Never mind the people who are going to use the time to learn, to create art and share it, to spend time with their families -- if we don't shackle people to their counters and desks, they'll be rioting in the streets!
How much theft/violence do you think is driven by need, by looking for a way to get by? If anything, I would expect violence and theft to go down.
