Really? So you've affected no one with your life? Who are you to say what effect this has had on the world?
Also, just because someone isn't sentient doesn't mean that they aren't a person. If we used that as a basis for all of our decisions regarding life, then we would have the "right" as a society to kill off the part of the mentally handicapped society that is so ill that they can't form memories, feel happiness, and think for themselves, something any sane person would have a problem with.
The real issue with abortion is that people don't want to face responsibility. Kids, adults, teens, whatever; they all want to have no consequences for their actions and abortion gives them that "right". In the end, they're killing a human being, and the world is worse off because of it, and they will have to answer for it one day.
Acts like this serve absolutely no purpose to the family. They willfully took a life based on the whimsical notion that they would rather have a daughter. It's gut wrenching to think that adults can have such a childish, selfish view of life.