Well, Galileo was a devout Roman Catholic right up to the day he died; Newton declared a Creator God, Whom he described as: "The Lord of Life with His creatures." I strongly doubt Darwin had any such spiritual understanding.
Note, Newton was a monotheist, but not a Deist. He believed that the mechanistic tendency of his theories would eventually produce disorder in the world, and that God had to step in from time to time to set matters aright. Newton was perhaps more theologically Jewish than Christian; the point is he, like Galileo, believed in God.
Darwin, on the other hand, lived in a world of agnosticism bordering on atheism, a world that believed above all in the infallibility of human reason, a world that eclipsed God by putting the figure of Man and his seemingly limitless "potential" in the forefront, as the only true object worthy of devotion.
Worldviews have consequences — and you, wagglebee, have given several powerful examples of the actual historical consequences of the Darwinist worldview. Thank you so very much!
To this day man seems to shake his fist at God and declare that he knows better which child should live and which should die - thinking himself brilliant to conclude that a person with Down's Syndrome for instance wouldn't have a life worth living. In making such a decision and acting on it, he declares himself "god" and denies God Who IS.