There is truth to what you say. I think what we have in mainstream America is an infection of the moral fabric of the average individual. It is like decay in the enamel of a tooth, you have to dig it all out or it will destroy the tooth. Likewise here. The culture of death has infected the American psyche with the notion that death is preferable to life, and that when offered a clear choice between life and death, the average American will choose death. It is a morally bankrupt and cowardly position, but it seems to have become the norm.
How did it come about in just a short time? I am old enough to remember a time when we cherished life, that it was viewed as a gift, to be protected and valued, and that, while at times difficult, was still worth living. And that was because there was a belief that where there is life there is hope, hope that you can make a difference, and can do some good in the world. Now, the national mood seems to be one of hopelessness, where the good fight is no longer worth the trouble of fighting.
I don't know where it has come from. Materialism? Narcissism? The rise of the abortion machine? All have taken their toll. But it comes down to people. And people make up the courts, the government, the medical professions. When those people turn their backs on choosing life, then we all face the death machine at one point or another.
IMO, abortion was the worst blow, but it really has been the Death of a Thousand Cuts. A little here, a little there, and pretty soon you have undermined a lot of what made America strong and decent.
Just look at popular culture- it's a cesspool.