niceatheist:
Well, just speculating here, but as I gave the example of another species (and one rather close to humans), bonobos have same-sex encounters that aren’t procreative, but at least in some circumstances seem to serve as a means of building or restoring social cohesion, or in some cases with males possibly to assert dominance. Again, this shouldn’t be surprising. While sex evolved as a procreative process, it’s yet another example of how a particular trait evolved for one purpose can be co-opted for another.
So the short answer is that not all sex is procreative, and this has been true long before humans even came on the scene.
You still don’t seem to be getting my objection. You conceded above, for the sake of argument, “suppose God exists”. And you said that, under that assumption, you still didn’t see why God would object to homosexual activity. My point is:
if He didn’t object to it, then why would He make it fruitless? It’s like saying, “I have nothing against gay people, but here, let me make them barren.”
So I’m just arguing for a conditional: if God exists, then God either is trying to indicate to us that homosexual activity is wrong or God hates gay people.