vouchers aren't fungible and then you need to pay for the whole system of authenticating/converting them. I don't have a problem with people spending unwisely; they will starve to death and stop collecting payments, right?
But you know that the groups that are continually pushing for expanded minimum wages, and other benefits would never let this happen. They'd find some paternalistic way of controlling the money, providing housing etc. And we have the last fifty years of The Great Society to show how well that works in fighting poverty.
