A little while back, a Facebook (and real life) friend of mind made this observation. With their permission, I am sharing the thread.
Teaching analogy: teaching is like putting on a dinner party for 30+ people everyday (90+ in middle school) mostly by yourself, with a wood stove, and only one pot. And sometimes there is no wood and the pot breaks, but you have to have the dinner party anyway. Seriously - it should not have to be this difficult!