There are many reasons to get a credit card: you may decide to apply for a credit card for the rewards, APR (including intro rates) or sign-up offers. Or you might want to build your credit history. Some credit cards like Discover provide $0 Fraud Liability Guarantee, which means you’re never responsible for unauthorized purchases on your Discover Card.5 Also, credit cards often provide extra benefits, like providing helpful alerts on your spending and more.