IMHO, I think that a Debit Card sounds like a good way to get in financial trouble, quickly (those $1.25 cokes at the service station and $3 Starbucks coffees add up quick...). And I can't imagine putting a Burger and Fries (total cost $2+change) on my credit card and paying interest on it.
But then again, I'm pretty old-fashioned when it comes to money. Heck, I still write checks to pay my bills and pay off my Credit Card balance religiously every month. I'm sure that my bank hates me for it..... :-)