Abortion is, in my opinion, just plain wrong. There is no right taking another human's life. This is not an easy topic, but it's not just religious people and the church being morally against this. To phrase it in a simpler way: "Wouldn't you now feel patronized if your mother had tried to kill you while being pregnant with you because that pregnancy was just an accident and she thought: 'Meh, f*ck that. Life's more fun and much easier without a child.'". With abortion, you are taking the life of someone else into your hand. They would have never lived, never had a chance to make anything out of their life. Where's the line? If you killed them at 5 months or as a 5-year-old child, what would have been the difference? If you don't believe in religion, that person is gone for good. Into the void. Gone.
Can't we just kill each other then if it doesn't matter anyway? I don't accept such a close-minded thought. Explain!
Also, I am very aware of edge cases such as rape leading to an abortion. I am not going to take these into account here since they get to complicated. Let's stay with just plain unwanted pregnancy due to financial issues or just plain egoism.