i think that it's so normal that we have salt now that people might have forgotten how important it is. Ghandi did like a 200 mile protest march to the sea and made his own salt in defiance of British law or some such nonsense. one of them things people take for granted until they can't get it.

most people also probably don't remember about sugar rationing and whatever else was rationed during WWII. especially why pantyhose was such an extravagant present.