The big box grocery store offers gas coupons for spending money at the store and then the credit card I use to pay for the gas offers 10 percent back in Bitcoin on up to $250/mo.
Discussion
That's pretty fair game to me.
I keep cash/bitcoin for small businesses who would prefer it. Otherwise, loading up the 0%apr cards up to the max (unless it's some specifically privacy conscious purchase)
But it is indeed pretty stupid to be forced to play these games. Just the amount of human capital wasted on constantly adjusting and studying the small prints.