Yep. That interest rate is a scary SOB. Not quite sure why the companies are allowed to carry the same rates on their cards as loan sharks do, but it's pretty despicable.You are the exception and not the rule. (Good for you by the way)
Credit cards can be a great advantage in using the banks money at no cost for a month at a time... The trouble occurs when you carry a balance and they bend you over at 18%+.