Because giving people money is a better way of doing the same thing while matching people's preferences. For instance, food: Handing people a government decide

Because giving people money is a better way of doing the same thing while matching people's preferences. For instance, food: Handing people a government decided food basket will not optimize for what people want to eat, or know how to prepare. Give them enough money to feed themselves, and we spend the same amount and we have happier people and less distortions. Same thing with shelter: Money means that we let people make their own choices, instead of recreating a new version of the projects. The one place where the market tends to fail is medicine, but that's because people's preferences there are a lot less valuable, as all people really want is someone to help them get healthy when they are sick. And even then, there are cases where giving people choices is better: The US' end of life care is so expensive and so dismal in part because what is covered and what isn't is decided by third parties: Often people prefer to end their life comfortably than to do many of the uncomfortable, but somewhat life extending things that we do to them. That's the ultimate argument for money: Maximizing people's choices in how to go around getting the basic necessities of life. The trick is that the amount of money we give people would have to be modified to make sure said necessities can be met.