How cool! I didn't realize this was such a popular prayer and had many versions. I just thought we said it because it was short and sweet and we got to eat.
My brother who is 10 years old than me and was married and out of the house by the time I was nine, opened his last night and he just looked at the words. He then asked, "How do I know this prayer?" I told him we used to say it before dinner every night when we lived at home. Then the tough Vietnam vet teared up. I think he remembered.