I agree with Scott. As a Bible-believing Christian from Oklahoma and someone who had a neurological disorder as a child, which in the medical sense was a disability and friends with parents of children with disabilities, I believe that the contrary is more true. Sometimes disabled children are a blessing from our Heavenly Father. My "disability" has caused me to rely on my God more and made me who I am today. If I hadn't had the disability, I don't think I would be as good of a Christian, because I would have probably been more arrogant and rebellious thinking my body was somehow perfect.
Great story. As Paul said, "Most gladly therefore will I rather glory in my infirmities, that the power of Christ may rest upon me. " Our weaknesses can be used to draw us closer to God, and as such, we should give thanks in everything that comes our way.
I couldn't begin to count how many times I've heard a parent of a disabled child talk about what a special blessing that particular child has been to them. Psalm 127:3 seems to fit well here: "Lo, children are an heritage of the LORD: and the fruit of the womb is his reward."