Even if you don't have a reward card with gasoline perks, other reward cards can come in handy through the purchase of gas gift cards. (creditcards.com)
Another drawback is that many of the lowest interest rate credit cards have no rewards program or perks. (creditsesame.com)
If you don't use your miles for anything, then there's no point in having a rewards credit card in the first place. (wisebread.com)