If gay marriage is okay, why not incest marriage?

If two consenting life entities love each other, isn't love a beautiful thing?

Is 9 the new 21?
Update: What beastiality? Aren't there just a few liberals out there who really, really like goats? Like Moslems?
Update 2: Maybe that whole incest issue is a little too close to home for most liberals?
Update 3: Liberals talk about "genetics"? What happened to Pro-Choice???
23 answers 23