The money quote:
I do not think that that State ought to have any role in defining the boundaries, purposes, or roles in marriage. Marriage is an Eccelesiastical sacrament, and should come under the purview of the Church and the Church alone - not the state, and not the Church-as-agent-of-the-State. When left to the Church, the sacrament maintains its integrity as a sacrament - not a tax status or organizational tool. If a Church wants to marry two gay men, so be it. If a Church wants to prohibit gay marriage and condemn homosexuality, so be it. Get the State out of the Churches entirely, and let them operate according to their own doctrine and consciences.
First, in defining marriage as a between a man and a woman and in prohibiting (or at least making) a divorce difficult, the state is not (necessarily) enforcing a uniquely Christian understanding of marriage. While not only this, laws about marriage reflect society's concern for the welfare of children rather then of adults. The emotional, physical and social health of children is of concern to the whole society not simply the parents. It is for this reason that we have marriage laws.
Look what has happened as we have increasingly allowed the desires of adults, rather then the welfare of children, to guide our laws about marriage. The divorce rate as well as the rate of illegitimate births have sky rocketed while increasing numbers of children are born into a generational poverty.
Second,as it pertains to marriage, the State certainly sees fit to interject itself into the Church's life. Yes, the State does acknowledge as legal a marriage that I celebrate as a priest. But, the State also sees fit to imposes its own values on that marriage by its willingness to grant a divorce to a couple who I married.
Third and finally, assuming that children are protected (and thus that adults are held accountable for the children then produce) it maybe that, in the final analysis, it is best for the state to get out of the marriage business. But, I'm simply not sure.
In Christ,
+Fr. Gregory Jensen
(Friend to Fr. Michael Butler)