Well, there are the very rare cases where death of the mother is a high possibility - that might be about the only time I'd support abortion. Self-defense.
Even in those cases, abortion might do more harm than good. If a woman is already very sick or injured, a stressful surgical procedure with a high risk of infection isn't exactly smart medicine.
However, I was referring in my post to the general state of pregnancy, of which I have considerable experience, not the exceptional cases.