Jonathan Haidt explains why there are not any civilizations without temples, starting at minute 14 of this video. This is the 2013 Boyarsky Lecture at Duke University. About 10,000 years we went from an almost instantaneous transition from hunter-gathers to Babylon. A huge part of our evolutionary development is this newly learned ability of humans to circling around sacred objects (religious and political objects are two dominant examples) in order to form teams. As we circle around, we generate a social energy that knits the social fabric, but also encourages Manichean thinking–us versus them, blinding us to our own faults and faulty thinking. No shades of gray are allowed when we are intensely groupish. This kind of groupish thinking is radically incompatible with scientific thinking. Science is squeezed out, replaced by sacred objects, groupishness and authoritarian obeisance.
At min 24, Haidt gets to the crux of his talk. Those of us who focus on the “care” (empathy) foundation of morality, often circle about it bonding with others like us, rejecting and denigrating the impulses and ideas that tend to drive those who are politically conservative.