I came across this in another discussion and something I really hadn't thought about or picked up on.
I never read The Hunger Games trilogy, but did see the movie earlier this year. The discussion was about do you ever wonder why religion is not brought up in these books? Why no one celebrates Christmas or Easter? Why no one prays for protection and guidance?
I also noticed this in the movie The Book of Eli, with the exception of Denzel Washington who played Eli.