"Homosexuality is a choice" and its paradox

[bennyboy]

Natural?...as in what happens in nature. One visit to the zoo's monkey house should be enough to convince anyone that what happens in a natural state is not synonymous with moral or normative.

Agreed, which is why rather than hearing about how unnatural it is, I'd rather hear arguments about why homosexuality is immoral, preferably without recourse to religion at all. "God says so," isn't a great argument in a supposedly secular government, after all; is there even a single non-religiously motivated argument for denying this right?

I think you could argue that the privilege of accepting your parents' investment in you (i.e. by making you) gives you some moral obligation to match that investment with one of your own. Hearing, "Ewww girls are icky" isn't very encouraging for parents hoping for grandchildren.