~”In my years as a mormon, I never really heard the reason for the day-old bread and water...”~
That sort of lack of knowledge about your former faith explains a lot about why you left. The question you ask is common knowledge, right there in the D&C.
~”I did wonder at times if the servers who tore the bread into little bitsy pieces washed their hands before doing it, though.”~
We’re instructed to. Usually, we do.
Why, yes, when I was mormon, I was one of the "Molly mormon" sheeple that knew nothing about the history of the mormon church...I was a good little unquestioning sheep, obeying my leaders and husband.
BUT, even back then there were libraries and books that led me to become interested in the larger issues, of which curiosity regarding the use of bread and water were certainly not what I consider to this day, a larger issue.