Children can be concieved medically for gay clients who can still have sex (even lesbians, indeed, sex is a strong drive-during the second trimester of pregnancy to build a unitive bond for the care of the child. It is natural and holy and so much fun). On sexual teaching, one must consider the source, If it is based on clerical idealism prompted by their own natural asexuality, then it is suspect for those of us not asexual. You are right about civil marriage for gays. At least no one is blathering about civil unions anymore. Still, the Church should take an interest in gay marriage because, as Judaism teaches, marriage is the union between two families. The genitals of those prompting the joining are not imporant and the Church promoting monogamous unions in Christ is a positive good. Get over the Stoic argument about the ends of sex. People have it for pleasure because that pleasure is good and comes from God.