My credit score was precisely 0 for many years. I didn't know until I went to buy a car. There was an incentive to get a spoiler and leather seat upgrade if I financed. But, the finance guy st the dealership said I didn't qualify due to a credit score of 0. Shook my head st the absurdity of this. Wrote a check and paid in full. Didn't get the free spoiler and seats. Insane that I can pay for a new car cash, yet don't qualify to finance it.
I have paid no credit card interest for many, many years. I paid a few dollars once many years back after paying a large income tax bill.
My credit scores are quite good.
The issuing bank is still making money on the fees to merchants. That’s more than enough to cover the cash back they pay me. I’m not the most profitable customer probably, but I am still profitable for them.