Credit cards and credit in general is bad for society. To me it's an outdated concept and a form of enslavement. The less money the bankers and politicians get, more for the farmers. None of this is gonna work until the federal government legalizes for all uses and weed is as legal as pizza and beer. Just my 2 cents. Credit card companies are worldwide and have to much money to risk breaking federal laws for a couple pot shops in Colorado. Their lawyers are telling them not to touch it with a 10 foot pole. A lot of people have too much money on the line to risk losing it all plus their freedom from the Feds.