I’ve never really featured religion very heavily, except in a NaNo story from about seven years ago. I guess because I’m not overly religious myself.

I enjoyed creating the religious mythology, and it did feature quite heavily. I even included a kind of Eucharist at one point. But I didn’t really like the basic story. I’ve kept my notes on the religion I created in case I decide to rewrite the story.

As Joy said, unless it’s integral to the story, religion doesn’t really feature in my writing.

I tend to work under the presumption my human characters are some flavour of Christianity.