I forget why I got onto this; Oh yeah! I think the unfaithful uneducated group are the ones pushing the materialistic worldview, thinking that their values and abhorrence for genocide comes out of science. They refuse to accept (or even look at) the monstrous results of a-morality, and decry religion as a stewpot of bigotry and violence.
To them I offer Camus, an atheist who was honest enough to recognize atheism's results: “In more ingenuous times, when the tyrant razed cities for his own greater glory, when the slave chained to the conqueror’s chariot was dragged through the rejoicing streets, when enemies were thrown to the wild beasts in front of the assembled people, the mind did not reel before such unabashed crimes, and judgment remained unclouded. But slave camps under the flag of freedom, massacres justified by philanthropy or by a taste for the superhuman, in one sense cripple judgment.”
The spiritual life is most important for personal growth and Love of the Lord and the full life, but even from an impersonal philosophical point of view, it is necessary for preserving human civilization.