I do not work at a big box store. I work at a wholesaler for contractors, who are going into people's homes or businesses, and often have employees. We are by no means the only source of their risk. One guy comes in pushing a walker, is elderly, overweight, and looks like he's on death's doorstep. Even if you believe masks work against droplets, they don't stop fine particles. You can't take it with you, is it worth dying for money?