A woman's reasons for pursuing medical abortion are highly personal. You may have mixed feelings about being pregnant. You may have major financial problems. Or you may not be capable of parenting due to mental health problems or other issues. For most of these circumstances there are alternatives, such as adoption. Sometimes a woman may have a serious medical problem that poses a life-threatening risk to her during pregnancy.
Some women prefer medical abortion over other types of abortion because some methods of medical abortion may be done at home, providing privacy and some degree of control.