I went to culinary school. I can't tell you the number of instructors who asked us "why are you in this profession? You will be working crazy long hours, under incredible stress in some of the worst working conditions imaginable!" They were right however I enjoyed it for most of my 20 years in the kitchens after I graduated. I rarely complained (well my wife may disagree) and when I no longer loved it I took it upon my self to make a major career change. I agree with you. Teaching is a noble profession that seems to employ people that, for whatever reason, appear to have no idea what they were getting in to.