Yes, Violet, OP is conflating homosexuality with not reproducing. Which ignores that a) lots of lesbians & gay men do have children, and always have done so; and b) lots of other people who aren't homosexual through human history have not reproduced for a wide variety of reasons - infertility, poor health & disability, choice/preference, never got the chance, no interest in sex & coupling up, dislike of children, tokophobia (a real problem for women that is quite understandable under any circumstances, but especially when there was/is high rates of maternal mortality in/after childbirth), membership in religious orders that require swearing off sexual partnerships, marriage & family life... and so on.

I deeply sympathize with others who can't reproduce but who may want to. I myself can't, and I have a lot of friends and family who have been unable to for various reasons, and I would never believe they are harmful or useless. Many of my friends don't want to have children, and I would never believe they are harmful or useless, either. I quite love all of these people dearly and would feel the world would be missing some very important people if they weren't here.

Moreover, OP seems to think that everyone who experiences "same-sex attraction" is homosexual, which is certainly not the case.

I know that's not true, but I omitted bisexual people because they could be in a healthy heterosexual relationship and possibly reproduce in that context.

Finally, OP seems to think that most human beings who walk the earth are the result of consensual coitus between males & females engaged in romantic pair bonding.

I would hope that most people are, but I understand that's a fantasy and far from the truth.