Even Romans 1 highlights how people suppress the truth evident in nature.
Anybody who believes in a Creator -- and that's a high % of Americans -- to turn around & then conclude that He started to create you only to be dismembered in what's supposed to be one of the safest places on earth (the womb)...is suppressing truth already there in one side of their brain.
Some believers assume God is directly involved in "creating" each and every embryo. Some just assume nature itself is His "creation" and various reproductive functions are just the work of amoral body fluids and genetic programming. Either way, abortions are a cancer on His designs.
There is a reason why "Don't commit adultery" ranks right up there with "Don't commit murder" in seriousness. Because the words "Therefore shall a man leave his father and his mother, and shall cleave unto his wife: and they shall be one flesh" is not just some common sense tips on family planning that accidentally left out the in-case-of-career exceptions.
Rather it is a brief though, for some, unfathomably deep description of our holy commission as currently physically reigning fleshly replicas of the Creator Himself and of His eternal spiritual family.
The quote above from Genesis might seem, to some Christians, like God's version of a romantic Hallmark moment. It's NOT!
When He says the two "shall be one flesh", that is His way of explaining to the DNA-ignorant, no-clothes-wearing, fruit eating Adam and Eve that they have divinely complimentary roles to play in His majestic plan. (And, by the way, while avoiding the gory details, He is quite clear that His plot will completely fall apart if casting gives the roles to Adam and Steve.)
Two people become one flesh. One new unique "creation". As designed. Perhaps the final blessing on one branch of the millions promised to Abraham. Perhaps a new pinnacle of a pyramid of blessings as numerous as "the sand which is upon the sea shore." We don't know. He does.
All WE know for sure is that the dead branch of abortion violates His glorious design and that its perpetrators inform Him that their section of His main avenue of blessing is not reliably open for traffic.