I adhere to a strict policy of using other people's reward/member cards only, and even then only if there is an immediate discount that comes with it. I'm ther

I adhere to a strict policy of using other people's reward/member cards only, and even then only if there is an immediate discount that comes with it. I'm there to buy food/utilitarian ditties to satisfy an immediate need. Not engage in a lifelong, lopsided bartering scheme. Economists, MBAs, and "marketing" are this eras Popes, Priests, and "missionaries". No thanks.