Avram in MD,
Not everyone gets married in holy matrimony. Besides death beneficiary, the Married status also affects many other purely secular legal and financial issues. Once example is insurance coverage. Another is taxes.
Regarding Abortion – I doubt that you think that the SCOTUS never read any books. They allowed it with full knowledge of what it says in the science books.
Regarding your hypothetical question about life staring at 4 months – whenever I debate this issue with strong minded , women’s lib oriented people they are astonished that anyone could even think of such a situation. They are amazed that someone can compare a fetus in a woman’s body to a baby outside it.
Non pro lifers are further amazed at the callousness that pro lifers show to adult humans who are living but they are refugees, immigrants or of a lower financial status.