Unless I'm missing something here, are you implying that once this pre-natal test is discovered,
everyone (except those whose religious values strictly forbid it) will choose to abort their baby rather than have a homosexual child?
So, those who really and truly have no problem with their child being homosexual, including those who have children who are openly homosexual and fully accept it, if given the choice, would have aborted their baby, rather than have it grow up homosexual?
In retrospect, almost nobody who's had a child with Down's Syndrome would choose to have aborted them, either, yet 92% of Down's babies are aborted. It's a decision that's made before the parents get a chance to know the child. After they know the child, their opinion changes.
Image a likely scenario. The test comes back and mom and dad have a talk. And they talk for a week or so, and dad is kind of uncomfortable, and mom knows it, and mom is kind of uncomfortable too. It's hard enough for a young couple to imagine raising a kid that'll be like they are. Then they wonder if their other kids would have trouble with a gay sibling. Then they wonder what their own parents would think. In many cases, unless they've been having a lot of trouble conceiving, they might just decide to try again.
And the more people who make that decision, and confess it to their friends, the more likely their friends will be to make the same choice. Even though few adults harbor any hate against children with Down's Syndrome, the abortion rate for them is around 92%.
Certainly the abortion rate from a pre-natal gay test would be much lower, but it doesn't take much to make a big dent in the population numbers. If the initial numbers came in at 50% it would create a pretty big shift, and that number is guaranteed if you think half the population is already bigots. Then you've got the rest of the population that would have no problem with gays, but would kind-of, sort-of, prefer not to really have one as a child at this time thank you very much. So a 75% overall abortion rate would seem pretty likely.
Stretch that out a generation and the young people are growing up with far fewer gay people. They'll be a little less comfortable than their parent's generation, and the abortion rate creeps up a little more, say to 85%. So in the generation after that, they're rarer still, and the parents who wouldn't have aborted because of anti-gay bias will start worrying that a gay child will never find a partner, or will feel all alone, etc, and the rate creeps even higher. The limit would probably a little less than the current 92% Down's Syndrome level, and we can surmise that most of the 8% of Down's babies who are still being born are being born in very Christian homes.
The gay community will of course be very upset as soon as they realize that couples are choosing to abort gay children, which would seem tantamount to genocide. Even the deaf community was horribly upset when cochlear implants came out because they saw the end of the deaf community.
Do you ban the test, or do you ban abortions? If the rhetoric gets too heated, feminists will protest that gays are dictating what women can and can't do with their wombs, and essentially using them as incubators. That'll make for some fiery talk-show panels. And the wackiest Christian moms will be siding with the gays against the feminists, while denouncing the gay lifestyle. It will be like the pundits and interest groups are playing musical chairs with their strongly held moral convictions.
Of course, by then all restaurants will be Chick-Fil-A.
