Trust me, I have and use rewards cards. But I don't use them for "expendables" typically. I have most of my recurring bills paid via credit card (electric, satellite, internet...), also use the credit card for major purchases (TV, appliances, etc) as we get a free 2nd year of warranty that way. Airline, hotel and other travel expenses go on a card too. Usually net between $2 - 3,000 per year in rewards (lots of business travel). And yes, the bill is paid in full every month.