Valksy said:
the quickest way to get rights is to take away the assumption that we are all deciding to be "deviants"
Won't change the people intent on having homosexuals kept as 2nd class citizens. Prove that all sexuality is biological in basis and they'll just start demanding people who aren't hetero be 'cured'. They did it when the dominant school of thought was that homosexuality was a psychiatric disorder and it was shock therapy for all the people who didn't have tab-a-to-slot-b-only sexuality.
Certainly, indisputable, conclusive, scientific proof that sexuality is biologically determined would make it a bit harder to the bigots to have their merry way... but is giving them a speed hump a victory when they've had you scaling cliffs for centuries?