The section you quoted had NOTHING to do with being turned off, and came just before I said that not being attracted to ANY group of people is an okay thing, as long as you act like a decent human being about it. My point was about the reaction of people, not to transsexuals in a dating scenario, but transsexuals IN GENERAL.
Bringing up chromosomes in not a valid argument, because it is not as simple as XX female/XY male. What about people with unusual chromosome groupings? (Please note the word "groupings", because some people have three sets of chromosomes.)
Let's face it. You don't judge someone you're going to date on their CHROMOSOMES. On their gender, probably; on their ability to reproduce, perhaps. On their history, very likely. But what do you REALLY know about the chromosomes of the people around you? Or yourself? How often is that checked?
You don't want to date transsexuals, fine. But saying that you're turned off by their chromosomes baffles me.
Finally, if you want to date someone who you can reproduce with, that's also fine. That's something which is important to you in a relationship. But a lot of people don't view that as an important thing. Even some who DO view it as important, don't view it as a deal breaker. You make it sound as if all people will only ever be happy if they can reproduce with their partners, which cuts out all gay people, all bisexual people who end up with a same-sex partner, all infertile/sterile people, all people with hereditary diseases they won't risk passing on, all women who can't carry a child... That's a lot of people who CANNOT have children, either with their partner or at all. Transsexual people are not a large percentage of that, so making it sound as if passing on your genes is "the very most basic important characteristic of living" is kind of... Well, dickish, really. To ALL of those groups (and any I forgot.)
(Just as an aside, even if I weren't trans, I would be VERY hesitant to have children, because I don't want to pass on my family's spotty medical history. Plus there's enough unwanted kids in the world, I'm happy giving at least one of them a home.)