Why do I care? Because I respect the word of God and His design for creation. And I care for all the souls whose eternal happiness is being placed in jeopardy by the claim homosexual desire can be legitimately expressed without eternal consequences.

Presumably you have evidence for the claim that "gender preference is in our DNA"? No. Didn't think so. That's because no such evidence exists. And, even it was in our DNA, acting on sexual desire is always a matter of choice. No one is compelled to act on a sexual desire. Accepting a person who has same sex sexual desire and loving them does not mean accepting homosexual behaviour as moral and licit.