Subsidizing human survival - oh no!

Via Andrew Sullivan (who uses one of those great dehumanizing photos of a faceless fat person to illustrate an item on obesity), Ezra Klein writes about subsidy and obesity:

In essence, we're paying to make our country fatter, then paying even more to keep our[selves?] alive as the health costs of obesity come due. It's insane.

I sure don't think it's insane to spend money to keep people (yes, even fat people) alive.