What are you talking about? Marriage is certainly not just a religious institution, and the part theology played in the early inception of marriage is incredibly miniscule, if not nonexistent. Monogomous unions, the predecessor of marriage, pre-date established religion and recorded history, arising around the dawn of man, and ten's of thousands of years before the three Abrahamic religions - arguably the three most prevalent religions in our society. Now marriage as the institution we know today - ceremonial and legal - came to be in an archaic age, through clans/tribes marrying off daughters to rival clans/tribes to form or strengthen alliances. Again, devoid of religion and thousands of years before Judeo-Christian beliefs surfaced. Marriage is also evident in primitive Amazonian, African and Asian tribes that have had no contact with the developed world. In the religious aspect, marriage encompasses all of them, whether they by polytheistic or monotheistic. Marriage transcends belief systems: it is commonplace in all, yet been exercised independently from religion for thousands of years. So to state/believe that the church is the final, and only, authority on marriage - a union with origins completely unrelated to their institution - is "Christofascism"