My late MIL always maintained that severely handicapped babies should be left to peacefully pass away. I used to think she was hard hearted but my views have changed.
I had a friend at primary school who had a severely handicapped slightly younger sister. She was unable to speak, feed herself, her eyes just rolled round and round, she just sat all day, every day in her huge padded wheelchair that supported her whole body. Obviously she was doubly incontinent, unable to stand or do anything for herself.
Her Mum looked after her until she was 10 but it was such a struggle as she got bigger and heavier that she then went into a home.
Amazingly she is still alive and now 68 years old. She is just the same as she was as a baby. Her care must have cost absolutely millions which, in my opinion, could have been better spent.
Her mother died many years ago, as did her brother. Her sister visits her just once a year now as she has never recognised or interacted with any of them.
If she had just slipped away after birth, the family would have been sad but they would have been spared years of caring for her and decades of visiting and worrying about her.