Dennis,
To be clear, you're absolutely right in that the species survives through procreation.  That is "the norm" if you will.  I'm pretty sure the species will survive, even if there's no church there telling us what to do, or not to do when it comes to sexuality.  I ALSO think that if we focus on love, (and the stuff I talked about in my post), much of this will work out.  What I mean by that is that by all accounts, being gay is not something "contagious," or otherwise "spreadable."  So whatever that normal/natural percentage of gays exist, that's not likely to change.  

I don't have answers, but I'm pretty sure that the church's teaching on human sexuality jumped the tracks a LONG time ago.  Spreading a litany of prohibitions, fears, name calling, and discrimination does little to foster what's REALLY important in human relationships. And remember, it's DESIGNED to teach this to our kids.  Today, we pay the price of that. I think the church needs to focus on something MORE basic.