Let's say hypothetically in an ideal society, everyone got perfect grades in school, then went on to get perfect grades in university or college, whatever you call it, and get themselves a degree. Even in that case, somebody still needs to flip the burgers, or put the fries in the bag. Not everyone can be lawyers or doctors, somebody has to take care of your groceries, so I think these people should be paid a liveable wage, since they're still necessary and essential to society, and we could not go on without them. To argue otherwise would mean that you believe that the very fundation of society should rest on a significant number of sacrificial lambs, who no matter what they did could never even have the luxury of earning enough to have their basic needs met on their own, and I think most of us can agree that is simply unethical.