I like credit cards for the air miles!! If it weren't for air miles I wouldn't hardly ever get to go on vacation! I'm fortunate enough to be able to pay a fair amount of invoices with credit cards. I have three cards, two for air miles, one for cash back. I have already used about a dozen free tickets! Cori and I have flown to Mexico several times, LA, New York a couple times, Costa Rica, right now we have about 6 tickets waiting to be used! It's crazy! The "cash back" card only allows up to $350 cash back per year, in December she took $350 then a few days later (January) she took another $350 so we had free tickets and $700 spending cash! The thing is... You gotta pay off your cards every month or you get hit with the fees and interest.