Because "we don't do that."

It is sad that Christianity is divided into various confessions - or rather, that the one, holy, catholic, and apostolic faith has been corrupted in so many ways. But it has. And each confession has their own way about them; they worship as they do for theological reasons, and what is appropriate to one confession is not appropriate to every other, as 103 year old Mrs. Genora Biggs knows quite well.