Utilize your financial knowledge, give your answer or opinion to the input question or subject . Answer format is not limited.

Will a credit card issuer cancel an account if it never incurs interest?
I've got a card that I've had for about 25 years now.  The only time they charged me interest I showed it was their goof (the automatic payment failed because of their mistake) and they haven't cancelled it.  No annual fee, a bit of cash back. The only cards I've ever had an issuer close are ones I didn't use.