Natural law reason without a papal bias shows no immorality in marital gay sex for those born gay. Benedict's response was to call homosexuals objectively disordered, but the natural order is a made up fiction created to collect sin because God cannot in his perfection. If the natural order was not made up, point to it. The bottom line is that morality is for the happiness of the individual in life. What concerns you is not that happiness but the reputational authority of the Holy See. That is an unworth goal. One that puts you with the Pharisees and the goats. (the plural you of course).