In Defending Marriage, Anthony Esolen lays out 12 arguments defending marriage. The final argument is that we should not give god-like powers to the State. A great quote from this chapter follows.
‘What the State essentially does, when it requires us to be parties to the lie that a man can marry a man, is to deny the anterior reality of marriage itself. It says, “Marriage is what we say it shall be,” and that implies, “Families are what we say they are,” and that implies, “There are no zones of natural authority outside the supervision and regulation and management of the State.” We’ve given up on the foolish notion of the Divine Right of Kings, dreamed up by totalizing monarchs of the late Renaissance. Now we have the Divine Right of Bureaucratic States. The old kings used to make common cause with smaller zones of authority, guilds and towns, for example, in order to check the ambitions of the noblemen. The new kings have obliterated those smaller zones of authority in principle, and seek to do so in reality also. That is in large part what public schools are now for; the education of children against the authority and direction of their own parents.’