John Gripentrog: Was the Civil War fought over states’ rights? Yes, but states’ rights for what? Over property rights? Sure, but property rights regarding what? The answer to each of those questions is clear: The core issue was slavery.
Civilization didn’t collapse when traditional Jews had multiple wives in Biblical times or when Moslems had four wives as permitted by the Quran, or when Utah was founded by men with plural wives. Civilization didn’t collapse with the end of legally enforced segregation. And it hasn’t collapsed in the states which allow same-sex marriage.