We can rightly attribute blame to organized religions because they have been the most successful at exploiting the way our brains work as a collective, but I think the problem is how our brains work as a collective. 

To me, believing that the absence of religion would resolve our problems feels too much like a different kind of magical thinking. It reminds me of a documentary I watched in the not too distant past about a group of white supremacists who figured out that they can exploit a legal loophole to build their own whites-only communes. One of the women living there speculated on the documentary that it would be “interesting” for there to be entire cities of only caucasians, presumably because she believes it would be crime free and safe, or whatever. Except I grew up in a town that had no visible minorities, and I remember how people derided the “wellies,” and the stoners, and the gays, and, and, and - we always find reasons to “other” people, and those reasons are only religion when it’s convenient.