Mental illness does not skip over certain professions, including teachers. Both of my kids had a few experiences with seriously damaged individuals who should not be teaching. There is a much larger number to whom I am forever grateful for the ways in which they helped my children.
By the way, thank goodness some students choose a “worthless” major like performing arts, which are an important driver of our economy and quality of life. Once we defund the arts completely, we’ll all have the pleasure of watching untrained, out-of-work STEM majors (yes, they exist) tread the boards.