It's been a long time (almost 2 years) since I have offended someone on this topic. Yes. One of the biggest taboos ever - abortion. I don't agree with abortion as a birth control method, but I do feel like it's a woman's right to decide the fetus' future.
There are few categories of people: those that oppose abortion because of their religious believes:
Those are the most hypocritical people on Earth. They claim that all life's sacred. Let's look at it from several points of view:
Then there are people who just want to live "naturally" - all those vegetarians, all those vegans, etc. Well, live as you want - but remember we don't force you to eat meat, so don't force other people to have babies they wouldn't want.
My final pro-abortion argument would be medical - look at anything illegal. Look at prohibition. When abortion is banned, there would be illegal abortions, home abortions, etc. Those are extremely dangerous as those procedures can make the woman sterile if not done right. And, man, God would not want that, would he?