Because of my work on metaphysical free will, it is hardly a shock that I am interested in whether sexual orientation is a choice. One problem with this issue is it seems impossible to prove (or disprove) the existence of free will in this, or any, context. As Kant argued, free will seems to lie beyond the reach of our knowledge. As such, it cannot be said with certainty that a person’s sexual orientation is a matter of choice. But this is nothing special: the same can be said about the person’s political party, religion, hobbies and so on.

Laying aside metaphysical speculation, it can be assumed (or pretended) that people do have a choice in some matters. Given this assumption, the question would seem to be whether sexual orientation is in the category of things that can be reasonably assumed to be matters of choice.

On the face of it, sexual orientation is within the domain of what a person finds sexually appealing and attractive. This falls within a larger set of what a person finds appealing and attractive in general.

Thanks to science, it seems reasonable to believe that some of what people find appealing and attractive has a foundation in our neural hardwiring rather than in choice. For example, humans find symmetrical faces more attractive than non-symmetrical faces and this does not seem to be a preference we choose. Folks who like the theory of evolution often claim that this preference exists because those with symmetrical faces are often healthier and hence better “choices” for reproductive activities.  

Food preferences also involve some hard wiring: humans like salty, fatty and sweet foods and the usual explanation also ties into evolution. For example, sweet foods are high calorie foods but are rare in nature, hence our ancestors who really liked sweets did better at surviving than those who did not really like sweets. Or some such story of survival of the sweetest.

Assuming such hardwired preferences, it makes sense that sexual preferences also involve at least some hardwiring. So, for example, a person might be hardwired to prefer light hair over dark hair.  Then again, the preference might be based on experience—the person might have had positive experiences with those with light hair and thus was conditioned to have that preference. The challenge is, of course, to sort out the causal role of hard wiring from the causal role of experience (including socialization). What is left over might be what could be described as choice.

In the case of sexual orientation, it seems reasonable to have some doubts about experience being the primary factor. After all, homosexual behavior has often been condemned, discouraged and punished. As such, it seems less likely that people would be socialized into being homosexual—especially in places where being homosexual is punishable by death. However, this is not impossible—perhaps people could be somehow socialized into being gay by all the social efforts to make them be straight.

Hardwiring for sexual orientation does seem plausible. This is mainly because there seems to be a lack of evidence that homosexuality is chosen. Assuming that the options are choice, nature or nurture, then eliminating choice and nurture would leave nature. But, of course, this could be a false trilemma as there might be other options.

It can be objected that people do choose homosexual behavior and thus being homosexual is a choice. While this does have some appeal, it is important to distinguish between a person’s orientation and what the person chooses to do. A person might be heterosexual and choose to engage in homosexual activity for practical reasons or curiosity. A homosexual might act like a heterosexual to avoid being killed. However, these choices would not change their orientation. As such, my view is that while behavior can be chosen, orientation is probably not.