Why on earth do we need a rule about this practice? What's the matter with doing it or not doing it? If we're going to clean up certain liturgical or quasi-liturgical practices, I'm sure we could find some that are (consubstantially speaking) more urgent

For instance, why when we say the Creed together, do we now say "I believe" rather than "We believe?" Yes, I know how to translate "Credo" and "Credimus," but that's hardly the point is it? And for that matter, why do we take the appropriate Latin forms of the word "homo" and in the Gloria think it means "people," yet in the Creed change our minds so it means only "men" - which, in Latin, is properly a form of "vir," not "homo."