Credit cards for particular purposes can be a useful habit. For instance, I use the Discover card for all ammo, firearms, and firearms-related purchases. I KNOW if there has been fraudulent activity in an instant if something other than those type of items show up. I've got a Visa that gets used as the go-to for clothes, gas, and other sundries. Then there's the AMEX that gets used whenever my wife and I eat out or travel. By dissecting our buying activity thus, it seems to make things simpler for us.Well then, I may have to open another account I won't use, lol.
We don't ever pay cash and we pay off our balances entirely each month. So the credit card companies make nothing on interest from us--they ONLY make money from what the sellers pay them for our use of the card.