the reason why this all is ASB is that without some sistem of colective superego and real or imaginary treath of punishment it is werry hard to maintain a society of any size or form or impose on any generall population a set of protocols that are to be followed to ensure some constructive behaviour and basic higiene, mental or fisical
at the same time it is not possible for a society of any kind to form without the above mentioned being already inherent in its basic structure
ewentually the living standards and the level of individuall education, as well as the civil state and/or rule of law make the whole religious/ideological sistem as redundant as any other superstition
but for a society to get to this point it really needs such sistems, they are something without wich even the basic expanded family tribe can not function
also belief in unexplainable fenomena and powers as well as construction of sistems of apstract values and beliefs is somehing that happens spontaniously, individually in a persons mind and colectivelly within any given group of humans
so for society to exist without religion, or without heavy ideologies, theistic or atheistic, that would have to be religions in all but name, is more or less like expecting a man to run without a spine, or in other words to hipotesise a man who, once removing his spine, decides to learn how to run
at least before the industrial revolution
also isnt the whole argument that religions cause people to get killed a bit apsurd? i mean many religious people are homicidal assholes, but that shurely has little to do with the fact they are religious, and more with the fact they are human
as i grew up during a time of frequent football related mass violence taking place in front of my own home, coinciding but generally unrelated with a period of ethnic war, i can with some certainty claim that people would be capable of killing each other in large numbers ower the color of shoelaces if no better reason is given them
the claimed reason is genarally irelevant, even if it is belived to be important or holy