So that was presumably your longest credit history, and instead of just putting it in a drawer you cancelled it???

I will never cancel my Discover card, as long as it remains free, no matter what they do. I can ignore is as much as I want, but given that it's the card with deaces (rather than just a few years) of credit history on my aco...., it seems prudent to just keep there for the rest of my life. (It's hard to be sure which of my other cards I've gotten recently I'll keep for decades.)