In socio-religious circles a new consideration that may include Eastern theosophy is that many have been on earth too long such that gender identity is more obscure. This tendency of the soul is not necessarily 'sin' but a different recognition of identity that does not negate the right to a loving union with another human being.
Through legislation like DOMA and social tides of our culture, a bigotry developed in the institution of traditional marriages that has sorely excluded many individuals who did not participate in marriage and forced many into marriages that may not have been appropriate. The domestic partnerships and other civil unions were not substantiated enough by law and the social system. Then the divorce rates and broken marriages reflected a concern that was the sign for needed reform.
Do we re-define marriage so that it is no longer the end-all in our social engagement as adults but another sacred possibility in our life choices? How do we develop a social structure that allows for healthy, responsible and loving relationships that are fulfilling with or without the requirement of marriage (legally and socially)? How do we preserve the institution of marriage as a social responsibility?