If homosexuality were preventable should it be prevented?

[Angrboda]

It occurs to me that there is some critical ambiguity in the original question, having to do with how that cure is effected, and the consequences of that method. I have three concerns here. First, anything which would tend to reduce genetic variability would seem in and of itself bad (the adaptive value of a trait is always with respect to specific environments and only with respect to those environments; thus, any reduction in genetic variability poses risks to the long term viability of the species [the question of heritability of the trait, kinship selection effects, and so on tend to play havoc with my simplistic analysis here]). Second, if the epigenetic theory of homosexuality is correct, the evolutionary benefits of homosexuality exist and are realized, largely, in those who aren't themselves possessed of the trait; leaving open questions as to what we're actually trying to control here, in whom, and what the effects of any specific intervention would be. Third, by most accounts, homosexuality is a product of phylogeny, not simply genetic, but also a result of other factors in addition to genetics and prior probability. So it would seem that any supposed cure to prevent the development of the phylogeny of homosexuality would also preclude the development of other traits when prior probability would not have resulted in that particular trait, stemming from the same starting conditions. (In perhaps clearer language, likely not all those with the predisposition to develop a homosexual orientation will actually go on to develop that orientation, and any early intervention would also be "curing" other conditions and developmental pathways that ultimately wouldn't have led to a homosexual orientation.)

A fourth consideration is the question of a sexual orientation spectrum, and more simplistically, bisexuality. When is too much attraction to the same sex enough to qualify for said therapy? Should we cure bisexuals as well? Anyone who isn't as straight as an arrow? I'm starting to wonder what the goal is here. Is fucking and making babies really all there is to life? God, I hope not; as someone who is celibate (and bisexual), that would make me even more depressed than I currently am.