For a married woman, giving a baby up for adoption is virtually impossible legally. The revelations in recent years about the abuse of children in institutions and the 'export' of unwanted babies to America in the past has turned many people against adoption. Abortion is being used as a method of population control in underdeveloped nations. Virtually all women would rather rely on contraception than abortion, but in some countries, contraception is expensive or unavailable and women are forced to resort to abortion. Although abortion is a legitimate way to allow individuals to limit their childbearing voluntarily when a country's resources cannot support its population, pro-choice people oppose forced abortion.
Most unwanted pregnancies become wanted children.
Women who have abortions regret their mistake later. Many unwanted babies are abused and neglected, and suffer lifelong developmental and social problems. Many women make mistakes in having babies they don't want and can't love or care for. A few women may come to regret their abortion, but this should not be a reason to deny choice to all women. Abortion causes psychological damage to women.