I'll go for pro-choice. Do you really want to see thousands of 14 yr. old girls having to keep the baby when it was a mistake/accident? It'll ruin their lives.
There was a girl in my Gr. 9 or 10 math class (can't remember) who was pregnant at 14 or 15, then her boyfriend dumped her, so she, and her parents were stuck with the baby all by themselves.