I find teachers to be the biggest group of whiners. It's always why teachers' jobs are the worst blah blah blah.
Every job has its problems, including mine as towkay. I have to worry about competition from rivals, worry about profitability turning into loss, about rental, settling serfs' disputes. My serfs are also worried that they get retrenched, fired. At least for all the shit teachers have to put up with, they don't have to worry about getting retrenched.