Not really related to the nativity scene but some of the comments reminded me about how I once tried to tell my brother that I thought the Adam and Eve story was an allegory made up by someone and he was horrified that I didn't believe Adam and Eve actually existed.
"Some people can thrive and bloom living life in a living room, that's perfect for some people of one hundred and five. But I at least gotta try, when I think of all the sights that I gotta see, all the places I gotta play, all the things that I gotta be at"