In the 'older days' to be "married" was to have a male take FULL responsibility for the care and upkeep of his female. In the 21st Century this is no longer an issue. In fact the population is such that we can well do without the 'Go forth and multiply' and that females have no REAL NEED financially to be dependant on a male for her brood. So the IS NO sanctimonious marriage never was, only in the eyes of the religious perverts who weren't getting any sex is it of interest.
"The Universe is run by the complex interweaving of three elements: energy, matter, and enlightened self-interest." G'Kar-B5