It’s not about canon law, it’s about reality. Marriage has always been between opposite sexes since the beginning of civilization. That’s because it’s a natural institution. Trying to define something as other than what it is, always leads to bad effects. I could define plutonium as being the equivalent of sodium in the periodic table, in the interests of equality, but if anyone took it seriously the effects would be bad. To say that defining plutonium as sodium is a tautology, would be merely to ignore reality. The nature of marriage is also a reality; it has not and will not change.
as to the argument that straight marriage is natural, you’re making an equivocation. natural doesn’t mean that some act results in or leads to procreation. if animals (including humans) are natural, and everything they do is natural, then gay sex is natural. over 450 species of animals have been observed to participate in homosexual sex, see
here. however, of all of those species, only people seem to practice marriage. so by that reasoning, the institution of marriage is unnatural. but it’s irrelevant what people or animals do, because you are rather arbitrarily defining “natural” to mean what you want it to mean, not what it actually is.
you are also making an appeal to tradition. the nature of marriage has changed considerably. here is a formerly authoritative passage from deuteronomy:
Deut 25:5-6 If brothers live together, and one of them dies and has no child, the wife of the dead shall not marry outside to a stranger. Her husband’s brother shall go in to her and take her as a wife for himself, and perform the duty of a husband’s brother to her. And it shall be, the first-born whom she bears shall succeed in the name of his dead brother, so that his name may not be put out of Israel.
Deu 25:7 And if the man does not want to take his brother’s wife, then let his brother’s wife go up to the gate to the elders and say, My husband’s brother refuses to raise up a name in Israel to his brother. He will not perform my levirate.
Deu 25:8 Then the elders of his city shall call him and speak to him. And if he stands and says, I do not desire to take her,
Deu 25:9 then his brother’s wife shall come to him in the presence of his elders, and take off his shoe from his foot, and spit in his face, and shall answer and say, So shall it be done to that man who will not build up his brother’s house.
Deu 25:10 And his name shall be called in Israel, The house of him who has his shoe taken off.
and i don’t understand how plutonium and sodium are going to march in the streets for their civil rights. you are straining the analogy. i’m talking about civil rights, you are referring to the periodic table. we might as well just be speaking two different languages.
i’m talking about the modern institution of marriage. today, marital status often is a precondition to the receipt of government benefits (e. g., Social Security benefits), property rights (e. g., tenancy by the entirety, inheritance rights), and other, less tangible benefits (e. g., legitimation of children born out of wedlock). it isn’t merely for procreation.
instead of arguing by analogy, state specifically the detrimental effects of gay marriage. there are many empirical benefits to society. look to the scandinavian countries for examples. they include lower incidence of suicide among gay people, lower rates of stds, and less promiscuity among gay people. and, since the passage of gay rights legislation in these countries, there are lower rates of divorce and children living with unwed parents. the evidence points to allowing gay marriage actually strengthening the institution of marriage in general, although admittedly correlation doesn’t equal causation and there could be other reasons for this.
furthermore, and more importantly, tell me how banning gay marriage doesn’t hurt gay people and their children. lowering gay people to second-class citizens almost certainly harms them, and i could point you to many sources. see
here here here and
especially here. and this is just a small sample.