Uh, Sam, buddy - hate to tell you this but there is a difference between an olympian god and Jesus; Jesus was here. It is not a Greek myth, nor a fantasy. Check it out, using only secular sources if you like, say from Hebrew, Greek or Roman history.
Sam, which societies have progressed to be most tolerant, innovative and capable of self-correction? They are those grounded in Judeo-Christian thought, those that tolerate but reject the utopian dreams of atheistic theorists.
We've just passed a century or so where the question was put to the test. Stalinism, Maoism, Fascism and the like gave us terror on steroids, where atheists outlawed and/or restricted Christianity and Judaism.
The totalitarianism of Islam has turned out to be a kissing cousin of those wonderful experiments.
We come from an enlightenment that grew out of debate within and against Catholicism then flourished in Christian countries.
The enlightened founding fathers, almost all believers, brought about a true enduring revolution of the people, unlike the French under the influence of Voltaire, who simply exchanged one type of dictatorship for a more brutal flavor.
Christians and Jews have by and large been the atheists' best friends for two centuries. Take note; no one flees eastward in a time of crisis. Artists, atheists, non-conformists and those of other faiths hurry toward the bastions of those who believe;
"...that they are endowed by their Creator with certain unalienable rights...."