Most of us say the creed without thinking; the rhythm of the words just carries you right along. I remember being in church as a child, and occasionally just focusing on everyone enunciating the "S"es in the prayers.
I do believe words have power and meaning though, and reciting things like the creed, or the Lords Prayer, or the Prayer of Saint Francis is a transformative experience, or should be. It's hard to argue with the latter two, of course [side note: I hate them sung...they should be said] but the creed is so out of date, and it could not possibly be updated to reflect the wid