If you are against gay marriage, explain why without mentioning religion

[Areym]

Torillian said:

Areym said:
The only possible argument would be that gay marriage could lead to bestiality. If a person can prove that an animal is consenting in the two doing it and god know what else, can we allow them to be married? We did it for gays, why not bestiality?

Even so, it's two, somewhat different things but I am pro gay marriage and opening the gateway to bestiality would be the only real argument I can think of.

How would you possibly prove that an animal was consenting?  they by law can't be consenting just like no matter how much a pedophile gets a 12 year old to say they consent it doesn't matter.  Gay marriage doesn't have this issue because both members are already consenting adults so there's a clear enough line crossing from gay marriage to bestiality that I don't find that to be a valid argument.  

Hell, i don't know, I don't fuck goats but i'm sure there are sleazy lawyers who could twist their way into making the animal have consent.

Like I said, without religion, what can we possibly argue to go against gay marriage. "gay people make me uncomfortable?" so do certain races/ethnicites but we can't ban them. "It is immoral and will lead to a perverse society!" We can't get more fucked up that we are now and guys buttfucking and women scisoring isn't that crazy anyhow.