Paul Krugman offers an answer:
In the end, I don’t believe there’s any policy justification for the attack on food stamps: It’s not about the incentives, and it’s not about the money. And even the racial animus that traditionally underlies attacks on U.S. social programs has receded partially into the background.
No, this is about petty cruelty turned into a principle of government. It’s about privileged people who look at the less fortunate and don’t think, “There but for the grace of God go I”; they just see a bunch of losers. They don’t want to help the less fortunate; in fact, they get angry at the very idea of public aid that makes those losers a bit less miserable.
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