And exactly how does banning an abortion when the pregnancy is not viable for any number of reasons (molar pregnancy, ectopic pregnancy, anencephaly) help anyone? Why are we forcing women to carry dead fetus's around in their bodies?
Because that's what a total ban on abortion does. It also makes IVF illegal if "life begins at conception".
The notion that the only abortions happening are happy couples who find out they're pregnant, tell their friends and family, plan parties, and then in some sinister plot months later wake up and casually decide "you know what, let's just kill it" is absurd.
Not all life is equal, and not all human life is equal. If you were driving down the street and two buildings were on fire, a IVF clinic with viable implanted eggs, and a preschool full of living children, you would 100% of the time try and rescue the preschoolers if you only had time for one. The idea that all human life down to a recently implanted egg has the same value as an 11 year old girl who's been raped and wants an abortion is an untenable position.