Pageantry.

From a thoughtful post by SDG at Jimmy Akin's blog, in response to a reader's story of his wife's discomfort with Catholic "pageantry."

Ritual and ceremony are not contrived and unnecessary, except in the sense that all human culture and experience is contrived and unnecessary. Wedding rings, shaking hands, Christmas trees, birthday cakes, napkin on the left, pallbearers, tuck the children in at night, floral arrangements in church or at a wedding or a funeral, Easter eggs, “Hail to the Chief,” bride and groom cut the cake, stand up for the judge, mortar boards at graduation, hold the door for the lady, kiss each other hello and goodbye and good morning and good night — none of these are pragmatically necessary, and all of it is how we human beings order our lives — if not with these symbols, then with something else....

[The] world into which Jesus was born was full of pageantry and symbolism.  And then, when our Creator favored our race by taking on our flesh and offering us so great salvation, He left us with symbols and gestures chosen by Himself and not matters of human convention. He took bread and broke it, and wine, and pronounced them to be His body and blood. He commissioned His disciples to go about immersing people in water in the name of the Father and the Son and the Holy Spirit. When the Holy Spirit fell on Pentecost, He did not proceed to liberate the people from pageantry and symbolism: Three thousand people were ceremonially dunked in water on the first day alone, and they immediately proceeded to devote themselves to the business with the breaking of the bread...

The whole post is worth reading.