Use a credit card because of the benefits, like cash back and fraud protection. If your credit card gives you 2% cash back, you could either use your charge card and pay $100 or you could use a credit card and effectively pay $98 for the same goods.

If you think you can get a credit card and spend $1,000 and you only have to pay $30 a month, you shouldn't get a credit card until you learn more about them. If you spend $1,000 on a credit card, you should be prepared to pay $1,000 within one month / 1 billing cycle.

You shouldn't carry any credit card debt long term unless your situation is dire, or there is some 0% financing promotion with your card.