I find it curious strange that some of those who state that homosexuality is deviant behavior and does not occur in lesser animals, seem entirely oblivious of male dogs to hump any human knee or other dog regardless of gender.
There have always been homosexuals, just like there have always been neurotics, great athletes, dullards and geniuses. If society had a cure for homosexuality, we would have probably had no works by Leonardo or Michaelangelo. Withourt neurotics, there would be no Woody Allen movies or Cather in the Rye type novels.
So curing them would probably not be a great idea, even if a cure were possible.
Turn Leonardo into a fundamentalist and forget about the Mona Lisa. He'd be writing Jack Chick comix in Italian.