*Jumping into the thread*
Personally I believe abortions are not a form of birth control, if you abort once because of unwanted pregnancy it can be forgiven. However constantly using it because you do not take or use birth control means you probably should just be sterilized.
Abortions should not be banned. I have a very close friend who was pregnant with twins, with her husband of 2 years. At 2 months they told her her babies had very severe birth defects, and would not survive, however she was also at risk of dieing during childbirth. The doctors would not abort the babies as they considered it to be unethical. 6 months later she went into labor, she refused an epidural due to personal beliefs. After 7 hours, she gave birth. To two babies who never even drew their first breaths.