I saw another stupid bumper sticker today that read, "Thank God Joseph and Mary were pro-life."
And I realised that this type of sentiment - and I doubt they realise this - implies that they think God is some kind of blithering idiot.
Now, stay with me on this one. Regardless of whether you take the story at face value - Mary was a virgin impregnated by the Holy Spirit - or a more interpretive one - my personal belief being that Mary got pregnant her first time, and God chose the child to be His - God wanted the child born and chose Mary for His purpose. So, to suggest that Jesus could've gotten aborted were Mary to get pregnant today implies that God's too dumb to pick someone who wanted a child rather than leaving it to chance. And of course, the fact that any number of things can happen to a fertilized egg between fertilization and birth, none of which would be anyone's fault, suggests that either God kept trying, or God knew what he was doing.
Same holds for people who try to claim that abortion is bad because omg what if we abort the Second Coming of Jesus? God knows we have free will, and he knows not all eggs make it into babies, whether through human intervention or not. So, if he really wants Jesus to be born, or born again, wouldn't you think he'd cover all his bases?