But, then, again I am a benighted bigot, who just cannot accept Public Reason's value of equality, and Public Reason’s value of equality dictates that same-sex and opposite-sex couples are equal in every way that matters. Therefore, a child's desire to have a biological connection with his parents cannot matter because if it did, that would mean that opposite-sex couples are in principle superior to same-sex couples. But that's just vile, inhuman heterosexist bigotry.
Therefore, to maintain Public Reason's value of equality, one must deny any significance to a child's desire for a biological connection with his parents while at the same time asserting that it is normal for same-sex couples to desire a biological connection with the children they raise. After all, opposite-sex couples desire and normally have genetic ties with their children. Therefore, equality demands that it is normal for same-sex couples to desire and have a biological connection with the children they raise as well. That's the logic of equality, which apparently trumps rudimentary human biology.
How this is not a blatant example of special pleading or even post hoc propter hoc reasoning, I have no clue at all. But, again, I am a benighted, hateful bigot, impervious to Public Reason and, therefore, should be cast out into the Outer Darkness.