Between 40% and 70% of all children who develop cerebral palsy were born prematurely.
Down syndrome is a chromosomal abnormality characterized by the presence of an extra copy of genetic material on the 21st chromosome. So it can happen to anyone, anywhere.
I hope you get hit by a car and die painfully slowly. I don't believe in hell, but I hope you suffer.
Or better yet, I hope that you have a daughter or son in the near future who has Downs syndrome. You are less than human, so you can't say fuck all about disabled people you cunt. I know a girl with Down syndrome who was the brightest child anyone could ever hope to meet. She certainly had more brains and common deceny than you do.
I used to be really irritated by people with mental disabilities until I started working in a hospital. Now I just laugh at them on the Internet and focus my irrational loathing on mouthbreathers and people with harelips.