When I had a team, we'd trade based on faith -- Jewish or Muslim folks worked Christmas, and on their holidays us "cultural Catholics"[1] covered so they could have "their" day off.
Even among those who were no longer religious, folks often had families who still hold these beliefs.
(I was educated in a Catholic school, was an altar boy, and will never return to either place, so I use the term "cultural Catholicism" to distinguish my agnosticism from the full blown atheism I see on HN which often has a bit too right libertarian branding for my left libertarian tastes.)
Even among those who were no longer religious, folks often had families who still hold these beliefs.
(I was educated in a Catholic school, was an altar boy, and will never return to either place, so I use the term "cultural Catholicism" to distinguish my agnosticism from the full blown atheism I see on HN which often has a bit too right libertarian branding for my left libertarian tastes.)