I have often wondered how my wife and I would have handled such a situation. I think that unless you find yourself personally confronted with the reality, statements as to 'you should always continue the pregnancy' or 'adopt the child out' or 'abort' or 'God/Allah/FSM will provide' are just theory. I would not try to impose my own personal and moral beliefs on someone facing such a decision.
Two things...first, I admire this statement, and hope that I live up to a similar standard.
Second, when we were having our first child, lab test came back showing a very high likelihood of significant problems. I don't recall the details. The doc called us in, told us, and then ordered confirmation testing. He laid out the options, including abortion, and sent us home to come back for the testing. It was a miserable two days. Every thought about what the possibilities were was met with an opposing thought. Thinking about aborting made me feel so guilty for being selfish, but then thinking of not aborting also made me feel selfish. Which was worse, to feel selfish for wanting a life without that burden, or feeling selfish for wanting to avoid the guilt and making a child live a life of pain and suffering? Long story short, confirmation testing was a blessing, because it showed that my wife was further along than anyone thought, so the original test results weren't actually high, but normal for her gestation stage.
But, as Millcreek said, I don't want to make that call, and shouldn't judge anyone for having done so.