Anyone interested in my take? I guarantee it'll tick people off in several directions. What it has going for it, is that it seems to be the truth.
First, sexual orientation is ingrown, not chosen -- the product of either (a) genetics, (b) congenital causes, (c) trauma, (d) events in early childhood, or (e) two or more of the above. No one --no one-- is completely sure of the causes, from a medical/psychological standpoint. (First person to attribute it glibly to "the Devil" gets reported as a Manichee, OK?)
Second, sexual orientation does not equate precisely to sexual behavior. An obvious example, which Mercy Burst brought up several months ago as an example for something else, is a runaway teenage boy who is naturally straight but is selling sexual favors to men to survive. (And it would be an interesting sidebar, but quite off topic, to identify who all is sinning in that case.) A man who is predominantly gay by orientation may enter into a straight marriage for any of a number of reasons, and appear to be happy and functional in it. And so on.
Sexual orientation is a spectrum, ranging from absolutely no interest in same-sex relations to the precise opposite. Most people fall somewhere along this, being technically bisexual, but suppress any behavior they believe immoral or "not them" in some other sense. (E.g., a good Catholic man may be largely attracted to women, find one or two men or teenage boys sexually attractive, honor the church's teaching about homosexuality, and condition himself out of regarding them as attractive.) This sort of selective conditioning appears to only work if (a) you do have a legitimate sexual outlet (not necessarily for active sex, but something it is considered licit to find attractive), or (b) you have an abnormally low sex drive.
Now: The sorts of reparative therapies offered by most "ex-gay ministries" do not work. In this sense: they do not restore a largely or totally gay person to healthy heterosexuality. They may be effective in conditioning him out of homosexual thought and behavior. But they do not, as a rule, result in "I am come that they might have life, and that more abundantly" that is Jesus's promise. The only studies that suggest they are effective 3% or more of the time are ones conducted by the ministry itself or those from Family Research Council and its friends and relations -- see notes on dishonesty of Paul Cameron provided by others. There is one ex-gay program I think is well done: it admits blatantly that it cannot cure you of being gay (acting on which it considers sinful), then enables you to live as a celibate gay or as a bisexual person with a wife who understands your sexuality.
Now, "with God all things are possible," and there are in fact some formerly gay people who no longer are gay, through God's grace. What they seem to have in common is, it was through direct divine intervention in their lives, and that was coupled with hard effort on their part as well.
Note the difference between this and the reparative therapies. The latter are human programs, designed to change people from who they are into what the program-runners consider is less sinful. The other is a direct miracle of God -- because He chose to intervene directly in the lives of certain people who were but no longer are gay.
Finally, it's important to note that the Scriptures on sex relate to its abuse -- the abuse of others, particularly family members, the use of casual sex exclusively for personal gratification, prostitution, etc. To generalize from the "anti-gay" commands to any instance of gay sex is very much like deciding that the commandments against rape, incest, and fornication also forbid sexual intercourse within marriage -- it is, after all, the same act.
This does not prove anything on what BAFriend has been calling "promosexual" stuff -- what it's saying, IMO, is that there have been some uncalled-for actions against gay people by those zealous to save them from themselves, that have misrepresented an assortment of arguable issues.
Perhaps we can find some common ground by locating a middle that we agree on, then tackle the tough issues together?