Perhaps it's because of this grinding insecurity felt by Mesopotamians, this sense that no amount of piety could secure your position in this world, and the next world didn't even bear thinking about, that their civilization went on to create some of the greatest innovations the world has ever seen. If you can't rely on the gods to do it for you, they seemed to believe, you may as well accomplish what you can on your own.
When you cannot understand the gods. Such revolutionary moment always exist in turmoils as that's when people realise the concept of gods doesn't work.