When Barack Obama first spoke publicly about same-sex marriage, he was equivocal. His views were still “evolving” he told us. Then later, after he had tested the waters and determined what cultural trends were developing, he spoke in support of it. He behaved consistent with the growing influence of a belief that all moral standards are relative and that human beings evolve morally as well as biologically.
This idea is most fully developed in secular philosophy. (There are secularists, there are humanists, and there are free thinkers who advocate substantially the same views. I try to refer to them consistently as secularists, because that term seems the most appropriate word for their core ideas.) Secularists deplore the idea that anyone would impose their morality on other people. They teach not only that each generation must find its own way, but further that each person must find their own way. In a recent conversation with a secularist, I asked how he knew that he had found the “right” answer to a moral problem, and his response was that the “right” answer would be whatever made him happy.