I love the hypocrisy of this (not you specifically, just the general attitude people have.)

People against homosexuality can say it's an unnatural pairing because it can't lead to reproduction, and thus shouldn't be supported. But then the supporters try to turn that around, and say "Well then you're saying that people who can't have children for whatever reason shouldn't be allowed to either, right?!" It happens every single time.

But when it comes to incest, those same supporters won't agree if you use the exact same approach and say "Then anyone who even has a chance of passing a disease or disorder shouldn't be allowed to be marry or have children, right?"

Yeah, I kind of sympathize for them, even as a conservative. It strikes me as ridiculous that society is embracing things like homosexuality (which to me is far more strange than a brother and sister) but still condemning incest. Either traditional ideals should remain in tact, or anything should go. There is really no legitimate case to make for in between.