Individual religions have played a very important role in history (both positive and negative).
Quote:
“The default religion of human beings is the practice of human sacrifice. This pathological virus planted deep in the heart of the human species has been given insufficient attention by scholars. Virtually all primitive cultures and ancient civilizations engaged in it.” You state further, “Obviously, the foundation stone of Judaism is the injunction against human sacrifice, when God tells Abraham not to kill him a son out on highway 61. Superficially, Christianity may be seen as a resuscitation of the sacrificial motif, with the murder of the innocent Jesus, but in reality, this is clearly intended to convey the idea that when we murder innocence, we murder God. The crucifixion of Jesus is meant to be the last human sacrifice, with Jesus standing in for our own murdered innocence (and our own murderous selves).”
(source)
Of course, religion isn't going away in total any time soon, however on the conceptual level the question to be asked would be (not addressing the specific theological questions) the pros and cons of the effects of removing religion from society. I must admit that something that would concern me actually relates directly to this question. That is not to say that atheists or pagans are by default mass murderers, or any nonsense like that, but by removing the religiously encoded ethical rules that all that allowed the rise of for a new moral standard I do wonder if ultimately some of those standards could disappear. Part of my wonder in regards is the influences of the most murderous tyrants of the Twentieth century (those who viewed individual human beings, or certain humans are disposable), which were very much anti-traditional religion (or at least opposed to anything resembling the Judeo-Christian viewpoint).
An exception to this "rule" might be the incredibly horrible King Leopold II, who ruled the Belgian Free State as his personal fiefdom, who decimated what is now known as The Democratic Republic of the Congo. No doubt his racism and greed played a major part is his willingness to commit one of the greatest mass murders in human history.