I mean someone needs to work at Walmart, McDonalds, etc... Should those people be miserable? Are they bad people because they have bad jobs?
True, someone needs to work minimum wage jobs, but unskilled labor is cheap and plentiful.
I certainly don't think it's fair to force a company to pay more than the market demands for unskilled labor. If a worker is miserable, the burden is on him or her to improve the situation.