If you think that having 2 mommies or 2 daddies will create an unstable household then I will ask you to pull your head out 1845 and really take a look at the marriage/divorce rates for heterosexuals these days.
If you think that gay marriage is wrong and GOD SHALL SMITE THE WICKED WITH THE FIRE AND THE BRIMSTONE AND THE ANGER.... then may I remind you of a little thing called the Separation of Church and State. You know... just something that your beloved Founding Fathers insisted on. You have your freedom of religion to say it can't happen in your Holy House... that's fine, your loss... but you cannot dictate what happens in EVERYBODY ELSE'S HOUSE. That smacks of a dictatorship and ya'll gone Commy on me now?
You would tell a soldier boy he couldn't spend the last precious moments with his beloved in the hospital just because his beloved doesn't have boobs? That is unpatriotic. You will make the bald eagles cry.
Awww.... you're worried that a homosexual marriage would threaten a heterosexual one? Why's that? Concerned that someone with the same bits as their partner might know a bit more about the good stuff during the SuperHappyPrivateTime? Wouldn't want other couples to blow each other's minds while you are still fumbling with yer zippers in the dark! ... *sigh* ... Just buy a damn book and pay attention.
You are going to tell the children of a blended family that they can't get covered under Mommy's health plan because Daddy is a Mommy too? You tell them then.... look those sweet babies in the face and tell them. You let them know that your prejudice and anger is what is keeping them from the dentist, the doctor, the optometrist...
Homosexuality is immoral, is it? Fine... you are entitled to your "opinion" but I think teaching your girls that all they are good for is breeding and feeding is immoral, I think that teaching children to hate and judge is immoral, but am I doing anything other than rolling my eyes and telling off color jokes about you? No I am not. I'm not even telling the jokes to your face... But don't you worry, I'm going to start. Tit for tat....
If you think it can't be a marriage because they can't have children then.... whoa, this one is too easy.... *snort* What about couples who are infertile? What about older couples on a second go 'round? What about all those babies that are being made right now, as you read this without the couple being married? Wow, that's a bad argument... like fartin' in the wind. More holes than Swiss cheese. You see where I going with this...
So let's get out noses out of people's bedrooms and into other things like ending world hunger, fixing the national debt issues, arresting global warming, stopping sex and drug trafficking, finding a cure for cancer, or any of the other hundreds of issues that need our time and attention. The sooner we all start to see each other as HUMANS and a WHOLE and not groups of folks we need to hate on, the better. Let's all just move forward and work on not destroying ourselves, hmm? We've all seen Planet of the Apes......