Being gay is a fetish.

[Esquilax]

This thread has been most enlightening, Heywood & Alpha Male. You both have presented well-reasoned and nuanced views on homosexuality.

You really think that? You might literally be insane.

EQUATING SINCERELY HELD BELIEFS with BIGOTRY

Reason applied to experience suffices to show that homosexual activity is wrong. The highest good all people desire is to be happy. People are happiest when personal circumstances and societal order allow them to freely act in accordance with reason and they do so, i.e. in harmony with the essence of human nature. Examination of the physical body reveals the natural functions and proper uses of its parts. Homosexual actions, like all other types of sexual sin, go against the natural functions of sexuality (procreation and conjugal love) and the organs with which it is expressed. 

As I've pointed out before, you have no basis for saying this: one could equally say that the natural function of human genitalia is to provide pleasure, considering they're filled with nerves dedicated to that purpose. More importantly, the simple assertion that genitals have a function and that function determines the moral dimension of their use is... well, to begin with it's an is/ought fallacy, since what something is in no way determines what one ought to do with it. Also, I don't think that you get to determine the boundaries of "conjugal love," either; that label equally applies to gay sex, and you haven't given any reason for its exclusion there aside from your own presuppositions.

Also? Homosexuality is more than sex, and certainly more than anal sex, which is the only element you might remotely have a case with, even if you're severely overstressing it. Either that, or you lot have, no doubt, severely bored wives who have long grown disappointed with the strict penis-in-vagina sex with no foreplay or anything else.

Heywood, Alpha Male, and I hold this opinion, which obviously differs from that of our opponents. But that is all it is: a difference of opinion. In order for our position to express bigotry, it must reflect an irrational prejudice against immutable features. This leads to their next error.

"I'm not a bigot, I'm just a judgmental tool! There's a difference!"

CONFUSING GENDER IDENTITY with SEX or RACE

People are born either male or female. Likewise people are born having noticeably different ancestries, i.e. various types of skin & eye color, facial structure, hair type, etc. These physical features are permanent and outwardly observable biological facts. In a just society people are not held responsible for biological facts about themselves over which they have no control.
Unlike race or sex, we recognize that gender identity is a social construct similar to masculinity and femininity. People self-identify themselves according to gender categories that express their proclivities and cultural affinities. Prejudice based on gender identity represents a reluctance to associate with people with certain attitudes and inclinations. In a free society, people must be free to decide with whom they associate.

Again, the mere assertion that gender identity (which is not sexual orientation, by the way!) is a social construct and nothing else is just that: merely an assertion. Moreover, it says a lot about you, too, that you find gender to be so optional.

CONFLATING ORIENTATIONS with ACTIONS

Our pro-gay opponents claim that homosexuality is not a choice. In so doing they fail to distinguish between a psychological disposition (orientation) with physical behavior (acts). If for the sake of argument, we take as given that people cannot change their sexual orientation that does not mean people must engage in the behavior. For example, married heterosexual men may still desire other women but they do not need to practice adultery. Whether they do or not is their choice. 

Yawn, the same old sophistry, wherein you demand that everyone else act the way you want them to because you say so. Chad, you've yet to provide a single argument for why people should abstain from gay sex that wasn't either a naturalistic fallacy, an is/ought fallacy, or reliant on your unverified religious dogma. Try again.

Or better yet, just don't.