My point is the Bible teaches that all people have their "sins" and because some people are SO afraid of the "sin" of homosexuality,
they feel righteous in keeping people from being treated equally as if we can socially engineer homosexuality out of existence. 
All law abiding citizens deserve equality under the law.
As far as how it affects
the children.....
How sacred is mommy has three children by three daddies? How sacred is that 4th heterosexual marriage.....to a heroine addict?
Is "Daddy has a mistress" on the school curriculum? How about "Mom married the old man for money 101" ? Or "Why do I look just like the mailman" ?