No. Down Syndrome leads to an objectively worse outcome for the affected individuals. And their parents, I might add.

We should not let compassion for these people obstruct some basic facts. My only consideration would be the potential risks and side effects that are to be expected for any medical intervention. But if we were expecting a child that was diagnosed with Down Syndrome, I would not hesitate for a second to give this child the chance for a normal life. And us parents the chance for normal parenthood.