Truly understanding cast iron is a philosophy of living. They take patience, love, and care. Each pan has it's own personality. Having one is to know its good and it's bad. Its hot and its cold parts.
One layer of seasoning on a pan is easy. Building layers of seasons is another thing. It's adding stories on top of stories. Memories imbedded in meals. Sometimes seasons go astray and only salt and a hard metal brush can get it back on track.
Cast Iron is heavy and sometimes impractical but it doesn't promise speed. It promises consistency. It promises time. And isn't that what we all really want?