Because the involuntary killing of a mother that is pregnant is a crime. In some States and countries it is legal end the pregnancy for the connivence of the mother. I support the termination of pregnancy for physical health threat and a severely deformed fetus. I had a family member that had to have a surgical abortion that was six months along that threatened her life and baby would not live no matter what any Dr. tried to do to save it. :-(
In that case, why abort the baby instead of delivering it?