Homosexuality is a lifestyle choice. There may be a predilection toward someone of the same sex, but that can be overcome...much as the alcoholic has a predilection toward alcohol. Society certainly doesn't embrace and encourage that harmful behavior, and neither should it embrace and encourage homosexuality.
How about this analogy: I can use a wrench as a hammer to drive a nail, but no matter what I do it is still a wrench being used contrary to design.
I'm not sure that I agree; however, I guess it could be argued that the pursuit of homosexual practices is a lifestyle choice.
Some psychiatrists suggest that "aversion therapy" has had some short term success...but the data is not fully in and the rate of recidivisim appears to be substantial.
Others argue that homosexuals could repress their behavior if so inclined...but this would probably lead to either physical or mental illness, or in the acting out in other anti-social directions.
In all things biological, sex is the most powerful driving force known and as far as I am aware, can't be successfully sublimated over the long term.