Over at Wonkblog, Dylan Matthews has a long post titled "Why do people hate deficits?" It's a good summary that runs through all the various reasons people give for thinking that deficits are bad.
But it doesn't actually answer the question, at least not as I take it. Dylan's list provides us with two things: (a) technical reasons that some economists dislike big, persistent deficits, and (b) talking points used by politicians who are railing against the deficit and need to toss out some plausible sounding arguments. What we'd really like to know is why so many ordinary people dislike deficits. Here are a few possibilities:
I imagine all of these things play a role, but I'd place a lot of weight on the last one. Sure, some of the reasons to dislike deficits are dumb and some are downright dishonest. But that's just the nature of political discourse. A movement that can't fight back against slippery arguments had better steel itself to lose lots of battles.
Like it or not, the truth is that deficit hawkery is a pretty obvious default position to have unless someone gives you a really compelling reason to believe otherwise. So if we're unhappy that the public is too hawkish about the deficit, we have only ourselves to blame.