I agree with you, but how many women over 35 have children KNOWING their chances of having a child with special needs raises after that age? Women are having children much later in life knowing all the risks that go with it. I have a perfectly normal (normal for my family) little 6 year old sister, my mom had her at 41 knowing what the risks were. People DO "breed" knowing there are risks/possibilites of birth defects. Like you said if the wobble was as bad as most make it out to be, they wouldn't survive. Survival of the fittest right?