Here is a fascinating conversion story from the hardcore pagan and environmentalist Paul Kingsnorth.. There are lots of interesting angles to explore but I believe the fundamental metaphysical question would be "can there be a compelling cultural version of analytic idealism without a core concept of God?" For those who want a more explicit description of Paul's conversion, here is his story.
The video alone should generate lots of discussion...
From Pagan to Christian
From Pagan to Christian
Be calm - Be clear - See the faults - See the suffering - Give your love