Wait until it's a more widely accepted phenomena.

That would make nay-sayers very happy, but of course, if everyone waits, it will never become widely accepted, now will it? This isn't preaching patience, it's a backdoor to intolerance.

nature renders gays and lesbians barren and sterile, due to their sexual orientation.

Bollocks! You're not talking about breeding horses and donkeys to get mules, you're talking about people who are generally as intact reproductively as the rest of the population. The absence of sperm or egg in a partnership is not seen as a great obstacle to parenthood, and to suggest the visitation of a bogus "wrath of god" barrenness on same-sex couples is disingenuous.

Children do best when raised by people who love them and who treat them fairly and kindly, who hug and handle them generously, who are frank when answering serious questions, who know when to say "no" and who know when "yes" is the answer to learning freedom and self-assurance. If children are fortunate enough to have both a mother and father (and/or an extended family) in which this happens, they are lucky. But they are no less lucky to find that kind of love and attention from any combination of adults and siblings and a natural or constructed extended family.

SRS