after reading some comments in the ""One income family" extinct? " thread I wondered how many people use credit cards regularly or at all. I also wondered how people pay for their day to day items. I work retail and see most purchases are done with credit cards, followed by debit and then check. I think I process 2 sales a day involving cash. I was at the dentist office today and saw they have credit card machine. My Dr's and pedi office has one also.