It's funny. (Not ha ha funny). I would never have had an abortion in her situation, but equally how am I to know? The woman whose house we are buying has the same chronic condition as dh, albeit far less seriously at the mo as she is able to work. She told me the reason they only have one child is because of this; when he was a newborn, she was in so much pain she couldn't hold him except to feed him.
Would she have aborted if she had had a second pregnancy? I have no idea and have no plans to ask! I won't let dh's illness dictate the size of my family to me, but equally, if I were the one who was ill, I would have an entirely different take on things.
Of course no-one's writing about abortion as a positive thing; it isn't. It is less negative than another outcome would have been. Only the people involved can truly judge which outcome they believe to be less negative.