I have no idea why anyone thinks this matters. The reason that gays are A-OK with me is because they're not hurting anyone by their behavior and frankly, in my experience, even seem to be slightly nicer than the rest of us (on average).
something that society wants to promote and give benefits to (e.g. preferential treatment, tax benefits, etc)
Bzzt. Gays do not get preferential treatment or tax benefits for being gay, nor is anyone suggesting this ought to be done.
any more than someone who makes bad lifestyle choices and becomes obese
Now we've completely jumped the rails. Obesity has a significant inherited component. Go trawl NCBI.
there are a large number of parents that don't want their kids recruited to.
Perhaps you're thinking of Jehovah's Witnesses? (Maybe they have a "gay" branch, I dunno.)
not something the majority of society wants to see promoted.
Shouldn't the question here be whether or not a set of behaviors is harmful to society, rather than what "the majority of society wants to see promoted"?
if homosexuality were not a choice, why are the two most common insults directed at anyone who is against public promotion of homosexuality "well you must be in the closet" and "you must be afraid you'll try it and like it"?
Well, (a) one can be gay and in the closet. Doesn't really matter whether or not being gay is genetic. Duh. As for (b), we saw a study just this month that found that homophobic males are most likely to be turned on by gay porn. So, maybe fear of just that really is a significant component here.
Anyway, please take a deep breath. Gay acceptance isn't going to mean the fall of the republic or endanger the safety of your children. For those we have Neocons and motor vehicles, respectively.
P.S. Yeah, I know you're trolling. It was good for me anyway. ;-)