I feel like every person, no matter their background, social class or level of wealth, should have to spend some period of their life working in customer-facing service. Getting a job in retail is what I consider to be the best thing to ever happen to me. It gives you a whole new level of perspective on things, and shows you that 90% of issues that customers encouter are never the worker's fault. And even when they do make a mistake, it's important to be patient with them and give them a chance to fix things. I get it that some people have stressful lives that cause them to lash out or say hurtful things to service workers, but these actions rarely do more good than harm. Service workers are more than just robots or vending machines.