Yes, I do and both of them are disabled. One has CP that affects all 4 limbs and he has the mentality of a 3 year old and is barely able to speak. The other is on the Autism Spectrum.
I am sorry that your family has endured this struggle. I cannot even imagine what you have had to go through.
Well I wouldn't say it's okay to murder a 10 year old. The point of live birth abortion is to say that after the 'whatever' trimester it's still okay to abort up until "THIS" point now.... because a lot of children are born with problems we can't see until they are born and some of them are bad enough to warrant a live abortion - but it's not to start killing children because they break their legs, like c'mon we're not horses here. There are circumstances that would warrant a live abortion and that's all we're discussing and advocating for; all of those other situations you come up with like killing some 10 year old kid because he got some insane nerve disease that crippled him is just crazy talk.
The problem is that it opens the door and pushes the needle further until, as @twisted476 noted, we're back in a time of eugenics. Even the most "airtight" laws can be open to interpretation by the courts.