Marriage equality? There is no such thing, simply because it is rooted in the reduction of marriage to a sexual-romantic domestic relationship. It omits the cause of marriage being preeminently procreation, or equally about procreation. Remove that and the responsibility for raising and providing for children, and you remove the rationale for marriage. A socially inert relationship (that is no offspring to look after) should be of no interest to the state.
Therefore I do not believe in marriage equality as is currently urged, because there is no functional relational equality between a man-woman set and any other set that would promote the rights, care of and responsibility for children.