Again, this begs the question. What do you do with children that *don’t* come from “one flesh” families?
Love them.
The gay rights movement makes a fundamental error in confusing sentimentality with love. Real love is self-sacrificing for the highest good of the other person. Certainly, that is the opposite of what a gay "parent" does, in denying the child his or her birthright of blood relations and family history.
As the renowned gay wit, Oscar Wilde, once said, "Sentimentality is loving people more than God would."