I think I could. But I haven't known any transperson that made it known to me, so every interaction I've had I took it as the gender I saw them as visually. If they were pre op, I saw them as the body they were in. If post op, I never thought they were trans. So it's possible if when it happened, there'd be a new idea to get used to. But I'm pretty sure I'd get there, if there was any there to get.
Procreating is a serious thing for a lot of people, and I don't think it's fair to say those people are lying. All of them, anyway. My wife's best friend got divorced because of problems conceiving. My best friend's wife has had her kids named since she was a little girl. A lot of people really love having their own kids. Is it possible people just flat out don't like the idea and are hiding behind procreation. Sure. But kids are a lifelong goal for a lot of people.