Often they weren't taught how to prevent it
Teenagers get pregnant, sometimes because they were careless, but very often because they just weren’t taught how to prevent it. I had a friend who was catholic and she got pregnant at 16. Her parents refused to let her get an abortion, even when the doctors said it was unsafe to carry to term. At 7 months she and the baby died from complications. It’s reasons like that that I think that the choice should be there. I don’t have to think that it’s right, but its not my body that we’re talking about.