When I spend $7,500, I get $7,500 worth of a product or service, and peace of mind.
Also, I forgot to mention earlier that there have been studies done (not going to waste time finding the links, and I don't have them bookmarked) that people tend to spend more money when they "swipe" with a credit card versus pay in cash, mainly because people tend to think twice about spending money on something when they use cash versus swiping a card - probably because spending cash has been proven to trigger responses in the brain that stimulate the pain receptors, versus swiping a card which actually stimulates satisfaction.
Listen guys, I'll never convince you otherwise, and you'll never convince me. That's cool .
My kids will grow up learning that they pay cash for everything, and if they look in their wallet/purse/piggy bank/whatever, they wait to buy it, and they will never go in debt to anyone with the exception of a house in which the payment will fall within a certain percentage of their income given a certain type of mortgage.
Enjoy your miles and .69% rebates!