Of course people have to do those jobs. It makes sense for them to be paid less than a living wage because it is totally 100% UNSKILLED.
If I can plug a high-school drop-out with the IQ of a moron into a job and get him to ask "Do you want fries with that", there isn't a chance in hell that job should pay a living wage.
You completely sidestepped the reality of the situation: just like any commodity, there is a job MARKET. Educated, high skilled individuals in a certain profession make a certain amout: that amout is what the market can support. Uneducated unskilled individuals make far less, because to make a crappy cheeseburger that costs $1.00, you can't pay your workers all that much money.
It's simple market economics. Our disagreement goes far far deeper here. You believe socialism works. Most rational people understand that it doesn't.
Up the minimum wages, and the price of a Cheeseburger goes up. If the price of a cheesburger goes up, then the prices of the higher-quality products will go up (or NO one will buy cheeseburgers). This is simply supply and demand economics. It's pretty much a natural law.
Screwing around with the lower payscales, in the end, simply creates inflation. Pay inflation and product cost inflation. It's a never ending cycle. Unless of course you go that step further that all socialist countries do and start putting price limits on everything. Then no one ends up being able to make a living wage, and you create artificial shortages, bread lines, and disaster.
Socialized economies /DO/NOT/WORK.
Ever worse is the 'why should I get an education effect'. See what the high pay rates that the unions managed to negotiate have done. We have a chunk of the population that dropped out of school and went work. They are now largely uneducated, almost totally unskilled, and most are on unemployement now as those high-paying unskilled jobs disappear (welcome to the free market at work).