Cullerton used to perform a stand-up comedy routine at some of his political functions, and I initially suspected he was pushing the proposal as a way of trolling for new material. But he advised me he doesn't do his comedy bit much these days, what with ethnic humor being fraught with danger. Cullerton's legislation isn't particularly strict. You wouldn't have to prove that you were telling the truth, and the police wouldn't be checking to see if you lied on the affidavit. And even if you declined to sign the affidavit, the only penalty is that you'd have to wait 60 days to get your marriage license.
Most people plan their weddings much further in advance.
It seems like common sense for couples to go through something like this, since a lot of churches already have similar requirements of their own. But I was quite disappointed to find that the state would not be establishing the curriculum for premarital training. I had envisioned an ordeal similar to traffic school, where county payrollers in windowless classrooms would quiz prospective couples about their expectations for how often they would have sex after they were married. That would be a bonding experience. Glieberman is all for mandatory premarital education.