True – circulated money is filthy no matter the source. But the immediacy of fishing it out warm from sweaty, possibly seldom washed places shows contempt for the cashier. Cashiers should be permitted to wear gloves at any till but that would cause the customer to wonder about the dirt on their received change so that’s not going to happen. Granted Jessica Alba boob money is still currency, but it goes downhill from there with weight, demographic, lifestyle, etc.