A lot of churchgoers don't realize that those are mostly used for statistical analysis. It's a pathetic attempt at adding a "personal touch" to a situation (i.e. a gigantic crowd) in which you can't have a personal touch, under the guise of trying to establish visitor frequency in ratio to the amount of money they take in to estimate costs and investments into useless, worldly things to gain even more numbers.
And he spake a parable unto them, saying, The ground of a certain rich man brought forth plentifully: And he thought within himself, saying, What shall I do, because I have no room where to bestow my fruits? And he said, This will I do: I will pull down my barns, and build greater; and there will I bestow all my fruits and my goods. And I will say to my soul, Soul, thou hast much goods laid up for many years; take thine ease, eat, drink, and be merry. But God said unto him, Thou fool, this night thy soul shall be required of thee: then whose shall those things be, which thou hast provided? So is he that layeth up treasure for himself, and is not rich toward God.
-Luke 12:16-21
