I rarely read books that identify strongly with monotheism, unless they take the form of something like the Golden Compass. I'm an acting atheist, personal agnostic. I adhere to the literal function of the term "agnostic" in that we cannot know. Until we're dead, we won't know if what we can see and detect with all our current instrumentation is all there is. But until I'm dead, I'm just gonna keep acting with what we do know.
That being the case, I'm unused to "getting into the character" of someone who genuinely and preferentially believes in a god. And not the fantasy gods that show up and actually do stuff, but the sort of mostly absent christian God that most westerners are accustomed to. For me, it draws me out of the character a bit, but I imagine that for many people who do believe, it draws them deeper in, since that's how they usually think.
Do your characters thank God for things routinely? Do they have faith? Do they pray?
I like to play with the religions in my worlds, but most of my characters fall into the agnostic-atheist club. Those that do believe usually do so fervently and wrongly, in faiths that are proven later to be false. I view religions as something to play with and use, to modify and identify why someone would or could believe in something, and what sorts of absurd things religions can make people believe and do. (Most of Leviticus, anyone?)
How does religion play into your worlds? Do you allow your personal beliefs to flavour your work? Wha do your characters believe? What kind of book do you prefer to read - one that heavily includes personal faith or one that shies away from a characters viewpoints. Do pious characters bother you if they stray too far from what you personally believe?
I'd love to hear what you think.