Yes, I am. I don't even have paid-off-each-month credit cards. We just use debit cards for everything.
The rewards cards can be a nice bonus if you are paying them off each month and don't have an annual fee (unless the fee gets you something of greater value, per your wants and/or needs). I've walked out of Cabela's with a lot of "free" (no cost to me, since I don't pay the card any fees or interest) stuff just for getting gas/groceries and a few auto-pay bills sent to it each month. It does require a modicum of discipline over your spending, so it isn't for everyone *coughmy_excough*
Though they are changing who runs the cards on the back end (Capital One), it has been nice because I generally choose to go pull cash from my bank and hand it over to them in the front of the store to pay my bill. Makes sure that it is clear that it is real money (and gives me a good reason to visit to see if anything interesting would be covered by my points) rather than just another electronic transfer of numbers. Obviously, this isn't as nice a benefit if you aren't close to a location (or a Bass Pro Shops).