I love this question, and can't believe I didn't really think of attempting to incorporate faith in my game. Especially with the addition of Seasons and creating your own holidays, it'd be interesting to create some fictional holidays and designate some beliefs to different households. While I have added a church lot and church mod, it hasn't done much. I use the lot for weddings (and even then it's rare because a bunch of weddings in my game occur in parks, etc.) and the church mod, I can honestly say I've used just once due to boredom. However, I have not checked for updates since so I'm not sure if it'll be appealing or not.
Edit: I'd love to come back to this thread with updates if anything changes with the way I play in regard to faith/religion.
