Unfortunately, Keynesian economics dictates you must have a credit card, and at the very least occasionally use it, so you don't have a low credit rating/score or "no credit history". Having a low credit rating/score or "no score" here in Canada can be a real pain. They don't care about your savings account, it's literally impossible to get on any payment plan. From buying cable services to buying an automobile, etc.
I'm using this silly Mastercard now to alleviate this problem and I hate it, just hate it. I lose so much money each purchase in fees.