As I’ve explored here before, there is a horrible, unbiblical, idolatrous line of thinking that says only people who are strong and have some sort of usefulness really deserve to live. The evil is breath-taking.
God warns about such thinking, and what will happen to those who take advantage of the weaker member:
I myself will be the shepherd of my sheep, and I myself will make them lie down, declares the Lord GOD. I will seek the lost, and I will bring back the strayed, and I will bind up the injured, and I will strengthen the weak, and the fat and the strong I will destroy. I will feed them in justice. (Ezekiel 34:15-16 ESV)
And God also tells us in several places how he will behave toward the weaker members, the ones cast off by the strong:
In that day, declares the LORD, I will assemble the lame and gather those who have been driven away and those whom I have afflicted; and the lame I will make the remnant, and those who were cast off, a strong nation; and the LORD will reign over them in Mount Zion from this time forth and forevermore.
(Micah 4:6-7 ESV)
God is coming. Those who would destroy our children with disabilities need to be warned that he will deal with them either as they deserve for abusing little ones he has created, or he will NOT deal with them as they deserve because they cling to Jesus as their righteousness.
And for those who are being abused and afflicted and ignored today, God himself is making them into a strong nation – one that will last forever.