While I respect that of the deaf, I wouldn't want a child to be born with spina bifida like I was. Life was just too hard. I admit it's different, though.
I made the decision never to have children because, I literally went from one life threatening situation to another as an infant. I had 11 brain surgeries by the time I was 3. I also had many surgeries since then. From a medical point of view, I was clinging to life from the moment I was born and wasn't considered "stable" until well into childhood. It was very, very difficult for me AND my parents to go through. That's not even factoring the social issues I faced growing up; which wasn't much different from what some deaf faced. A lot of ridicule and being shunned.
I don't expect others to share my view; nor do I expect them to choose the same thing, but for myself, there's no way in HELL I would want a child with spina bifida.