On top of that, I get cash back and other benefits/rewards from using a credit card (like extended warranties and insurance on the things I purchase). Yes, these things make purchase prices go up for everyone, but if you don't play the "game", you're leaving money on the table.
Most merchants do not pass credit card fees on to card-using customers (so you don't save by using debit or cash), though that practice has increased over time. Certainly if/when that becomes the norm, I'll have to decide if the benefits of using a credit card are worth the cost.