Why do so many homophobes always bring up the fact that gay people can't reproduce together?

It's not the fact that they can't reproduce, its the fact that nature didn't crested homosexuality (just like nature didn't create artificial sperm, birth control, etc) because if nature had created homosexuality then men could grow babies. Ok I know for sure Ur going to say artificial intimation, sperm banks etc. Well imagine there was a nuclear war, and everything was pretty much destroyed. All the sperm banks, all the labs, everything gone. Would homosexuality still be natural? No. Why? Because they can't naturally reproduce. They need a donor, sperm bank, etc. But of course Ur not going to want to believe me, because maybe u don't want to hear the truth but that's the truth, and facts.