One day you will get a letter saying your account has been closed. No warning. Or, you may get a letter saying your account will be closed if you don't use the card in the next few weeks. I've had both.
The first lowers ones credit rating. So does canceling it yourself.
At least you got the notice. Credit Card Companies are not required by law to notify you of the cancel. I found out two dropped me after credit bureau review.
That's how they get you. In chess what is called? The zug-zwang or something like that. Got you by the gonads coming and going.
From their perspective- A man that doesn't need credit isn't too much good to our system.