Divorce Rates Higher in States with Gay Marriage Bans

The author quite properly notes:

The differences are highly statistically significant. Nevertheless, they do not necessarily imply causation. The decision to ban same-sex marriage does not occur randomly throughout the states, but instead is strongly correlated with other factors, such as religiosity and political ideology, which we have made no attempt to account for. Nor do we know in which way the causal arrow might point.

Lots of comments, a few of which are helpful.

From Skepchick