* Religion of supernatural is replaced by a religion of natural (aka science).
* All wars become trade wars (aka, what it is now—but more transparent).
* Morality comes from philosophy rather than scripture (aka, more-or-less the same)
It's a good idea to universalize religion with a Unitarian, post-modern, inter-faith belief-system, but humans won't outgrow their need to understand what we can never be understood anytime soon. We'll always have religion—whether we call it a religion or not!