Our whole-ass society is structured around Christian norms. Holidays, liquor laws, businesses closing on Sunday, loads of idioms and turns-of-phrase, it is pervasive and so normalized that any deviance is seen as shocking. (At least we aren't one of the countries where heresy is still an actual crime)
While not tying it to religion, I think it's desirable that workers have and can afford two consecutive days off from work, that can and should be worked around personal preference as much as possible.