I think it is good that you are trying to find an analogy to make antinatalism easier to understand for those unfamiliar with it , but think this particular analogy has a flaw . I think the flaw in the analogy is that the majority of people only enjoy sex under very specific conditions outside those conditions sex is not pleasant and can even be painful and psychologically scarring . When someone is feeling sick and is barely conscious it would not be reasonable to assume that they would enjoy having sex because almost no one enjoys sex in that condition . Since the girl is currently in a state in which most people would always find sex not pleasant if not downright traumatizing it would be immoral of you to have sex with her . This is different from being born because you can find many people who would say they are glad to be born but you would not find many if any women who would say that they are glad they were raped while being passed out . I think the analogy would be better if it used a more neutral scenario where consent is not possible and by neutral I mean a scenario where at least a somewhat significant portion of people would say they are happy it happened to them .