You shouldn't get to define someone else’s homosexuality
The reasons someone is gay are highly personal. Nobody should be allowed to tell someone else why they are gay.
The answer to the question will only have negative repercussions for the LGBTQ+ community.
The impact of getting a definitive answer to this question will be catastrophic for the LGBTQ+ community. It is best to leave the question unanswered.
If scientists prove that people are born gay and can link the development of same-sex attraction to a specific gene or genetic mutation, it will open the door for one of two things. If we are born gay and it proves to be a hereditary gene, homophobic parents carrying a foetus that has the gene could prove to terminate the pregnancy rather than give birth to an LGBTQ+ child. This would only serve to further marginalize the LGBTQ+ community. Alternatively, if it is a genetic mutation that causes same-sex attraction, the public will begin to view the LGBTQ+ community as victims of a disease. Neither of these outcomes will have positive outcomes for LGBTQ+ individuals.
Understanding why people are gay could lead to improved attitudes towards LGBTQ+ citizens. It could also lead to further public scrutiny of those that hold homophobic views and an end to damaging gay conversion therapies. All of these would be good outcomes.
Enter the framing of the argument here ...
[P1] The answer to the question of whether or not people are born gay will only have negative outcomes for the LGBTQ+ community. [P2] We should not seek to answer the question.
[Rejecting P1] There are several important positive outcomes that could come from getting an answer to the question.
Enter more information about the argument here ...