My girlfriend is a primary school teacher and works hard – giving a lot of her own time in the evenings, weekends and in holidays.
On balance, given the holidays, working out of hours and marking I’d say that she and I work as hard as each other – she with the difficulty of working with parents, me with the threat of redundancy.
However, the starting salary, annual pay increases, general pay increase through thresholds and pension contribution far outweigh what I get.
I wouldn’t do her job simply because I have no nurturing instinct or patience for kids, not because it’s too difficult or demanding.
I think there are easier and more difficult jobs than teaching, but the “teaching is the hardest job / teaching is a vocation / teaching is poorly paid” lobby is vocal, especially the NUT.