The title is quoted from Bryan Caplan at about 8:30 of the Freakonomics podcast, We the Sheeple.
I recommend listening to the entire 24 minute podcast.
In one segment, Caplan addresses some Obama and Romney campaign planks and explains why they are terrible economics, but good vote-getters.
Regarding making it easier to go to college, Caplan points out that the benefits are not that clear from economic standpoint because:
We already have an enormously high drop-out rate, especially for marginal students. Most of the benefit from college is from actually finishing it. Over the last decade we’ve seen a large rise in the number of people who start college, but the fraction that actually finishes is very flat. It seems quite likely that this is just going to encourage some people to waste a couple of years of their lives with very little to show for it.
But the reason politicians campaign on it:
And yet, what I just said is not anything you’d ever want to tell voters. You certainly don’t want to get in front of a national audience and say, ‘you know, I think too many go to college, a lot of people aren’t very serious. That’s just the fact. A lot of people aren’t meant for college.’ That sounds terrible.
[Host Dubner]: And, therefore, campaigning on the idea of sending more people to college is a great thing to campaign on.
[Caplan]: Sounds great. And, of course, we’re going to pay for all this stuff…sounds good… I mean who wants to pay for stuff?
That last question sums up politics. Who wants to pay for stuff? Nobody really. But we hope others will.