I think that's the most important question.
I believe the story is that one will abuse whatever welfare they get. Whether it's stamps, credits, services or money.
Here in Australia they've been trialing a cashless debit card to control what people spend their welfare money on. Somehow, it's still costing _more_ than just giving people money and the recipients aren't happier either. Some are using the card to buy things like batteries and re-selling them to then buy their drugs and alcohol. So there's money spent to restrict the money, but the money is still abused. So why not just give them the money?
In the end - money is money. Poverty is literally only solved with money. Surprisingly, the cheapest and easiest way to solve someone's poverty is to just give them money. If they abuse it? Fine. They were going to do that anyway.