We are given rights by God in order to do (serve) something good.  Rights serve duties.

They don't simply exist in order to please/pleasure me.  I am not the object of my rights.   The good is.

The rights we are given depend on our nature or on the vocation that God gives us.

The reason a woman has the rights to prenatal care is to serve some good aspect of her nature:  the life within her. 

My right to free speech is given in order that my speech might serve a good (larger than me).

My right to practice my religion is to serve God, not my own fancy.

If a baby is robbed of life in her mother's womb, the baby will never be able to serve God, which is her (and your & my) purpose. So, she (you, me) need that right protected in order to fulfill its' intended purpose.

Modern Americans have such a distorted (inverted) understanding of rights that this purer, and more self-less understanding of the nature and purpose of rights can't work its way into their brain.  

They say "what?".