At Fannie’s Room I came across a link to this article at Slate. It mostly concerns different–sex couples in Illinois who are opting for civil unions rather than marriage. In other words, there are fewer marriages than would otherwise have been the case.
The appropriate response to this is, of course, “I told you this would happen”. Just as I predicted over a year ago when this law was passed, and just as has happened in France, by allowing different–sex couples access to civil unions, it creates a competitor to marriage, and therefore weakens marriage and reduced the number of marriages. Had marriage equality simply been allowed none of this would have happened. This is why the supposed concern over the “sanctity of marriage” actually isn’t. Someone who was truly concerned about the sanctity of marriage would not create alternative to it. Rather, they would support marriage equality and therefore increase the number of marriage. Since none of the opponents of marriage equality (that I know of) appear to be doing anything to prevent the benefits of marriage from being available to those who aren’t married, it is clear that opposition to marriage equality is really motivated by bigotry.
And since Hawaii’s civil unions law also allows different–sex couples to enter into civil unions, I predict that the same thing will happen there.