Can confirm. I have two little ones and while life is much harder than it used to be, I've never said "damn, those coal miners don't know how easy they have it." Now it can be argued that it's one of the most important jobs in the world, since society is fucked if too many kids are raised badly.  But it's far from the hardest job. Not surprisingly, the people who claim it's the hardest job are almost always fat moms.