Eugenic abortion is wrong? But what are we supposed to do with all these unwanted children, then? They're just going to grow up to be criminals. (<-- every abortionists argument with me for the past 50 years.)
This reasoning is also why I formally endorse abortion, as long as the baby is non-white. This is how I respond when people ask about my political position on abortion.
(The reality is that I believe abortion is murder and should be treated like murder. And people who complain that this is unfair should also be put to death for good measure.)