The traditional marriage debate is not rational

Society and Marriage: Quid pro Quo : Dr Jeff Mirus, Catholic Culture

...it makes no sense to provide the benefits of marriage to same-sex couples, a very simple and pragmatic reason: Society will gain no benefit from doing so. Heterosexual marriage generates families which constitute the fundamental unit of the social order. This is a great benefit to society as a whole. Indeed, it is the sine qua non of society, and it is a benefit provided at considerable sacrifice on the part of the married couple. In return for this benefit, all societies foster, encourage and protect marriage in various ways, including laws which make it financially easier for married couples to maintain their families. This arrangement is based on a quid pro quo which cannot be duplicated by same-sex couples.

By de-criminalizing contraception, society proceeded down a slippery slope which leads to the call for "marriage equality." Heterosexual marriages can remain as sterile as homosexual marriages. If you think children are "a great benefit to society as a whole", look at their treatment in the tax code which is how "society" can put its money where its mouth is. No, I don't think we can turn back the clock to pre-Griswald, but we can't pretend this is a rational debate either.