SCOTUS 2015: For Kennedy, it was about the children.

"The court has long held that laws that harm children in order to express moral disapproval of adults’ conduct violate the Equal Protection Clause. (Specifically, the justices invalidated laws that gave “illegitimate” children fewer benefits than “legitimate children” to encourage adults to procreate in wedlock.) Kennedy’s Windsor opinion gestured toward these precedents, noting that the federal gay marriage ban “humiliates tens of thousands of children now being raised by same-sex couples.”