Unfortunately, it is a liberty that some wish to eradicate. They believe in misconceptions that are based off of skewed facts. Making abortions illegal will not sojourn anything. When a woman needs an abortion, she will do whatever it takes to have one.
A common misconception is that women use abortion as a form of birth control.
Studies show that most common emotion felt by women post abortion is relief, not depression or trauma. Reproductive Choice and Abortion: A Resource Packet.
Washington, DC: American Pyschological Association, 1990.) This is evidence that the pregnancy was most likely under the wrong conditions; for example, a woman needed to have an abortion for medical reasons.
Wanting to keep a baby alive that has so many problems that it would have a completely painful life and uncomfortable life is a bad choice.
There are pro's and con's to both of the sides of abortion which ever one you can find more pro's to is probably the side you should take.
Finally, abortions don't encourage teenage girls to have sex.
It would be jocular to say that a teenager thinks "If anything, I will just get an abortion, and no one will ever know".
Although some of the reasoning that pro-life activist use, might seem a little ridiculous at times many of the activist aren't able to have children or are just trying to defend a baby that can't defend it self.
The pro's of pro-life are that the baby gets a chance to live and experience life outside of the womb and maybe someone who is unable to have children will get the chance to be a mother or father if they adopt this child who would have been aborted.