Let's start with a few statistics (from U.S. News & World Report 1/19/98)
Why do women get abortions? 76% are concerned how having a baby could change their lives. 51% had problems with a relationship or wanted to avoid single parenthood. 13% cited health of the fetus 7% cited the health of the mother 1% cited rape
43% of American women will have an abortion in their lifetime, if current rates are sustained. That means abortion is as common a life experience for women as divorce. (from the Post-Abortion Peer Counselling Manual)