If you think of a wedding as a primarily religious occasion, then a civil ceremony is a secularized version of the same thing. You get all of the pomp and “official-ness” without any of the religious nonsense. And it makes sense to have that alternative since you don’t need God to celebrate a union of two people.
But do you really need a secular version of a religious ritual?
Dolores Diez, an atheist in Spain, is calling for her local town hall to conduct a civil communion for her 8-year-old daughter.