Fear of the unknown was ingrained humanity as a survival mechanism. Among many things, I find it ironic that the things that helped facilitate species survival prior to civilization are exactly teh things that most hinder us now.
Think about it: fear, energy sequestering (fat), male aggression, silent female orgasms. All these things do more to disrupt modern society than anything else, but all helped prepetuate us in prehistory.
Think about it: fear, energy sequestering (fat), male aggression, silent female orgasms. All these things do more to disrupt modern society than anything else, but all helped prepetuate us in prehistory.