I wonder - if you are not prepared to look after a child NO MATTER WHAT - whether you should be having children at all. What happens if your perfect, normal child suddenly is not perfect or normal anymore? Life itself is risk. Car crashes and other accidents, underlying heart conditions, mental health diagnoses, learning disabilities, neurodivergence, childhood cancers etc - a perfect healthy child is not a guarantee nor should it be the reason you conceive or continue a pregnancy. And I'm surprised by people who seem to think a normal fetus in-utero guarantees them a normal, easy, abled life for them and their child. Nothing could be further from the truth.
It's not about convenience, or not wanting to look after them, that sounds so reductive and disingenuous to what it actually is to experience the horror of finding out your precious baby is ill.
It's about trying to reduce the harm, physical pain and suffering that your baby will experience. You know they will, because the doctors and HCP are very clear about their prognosis. They have to give you best case and worst case, but they can't guarantee anything.
I couldn't watch my babies suffer, fade away and die. Or rather, I had to do it before they were sentient, before their neuro-receptors could feel or process pain.
ND, from my POV, is very very different to needing all of the very intrusive and physical interventions and operations that my poorly children would have needed. Which may not have prolonged their lives. Which may not have improved their lives. And would not have stopped me having to plan their funerals.