I don't think that's an accurate description nor representation of every teacher. Most of the teachers I know are in the profession because they love to teach -

I don't think that's an accurate description nor representation of every teacher. Most of the teachers I know are in the profession because they love to teach - so much so that it outweighs all the negatives you've presented here. My experience is only at the college level and the environment is not much better (again, anecdotal experience, not representative of all universities). There's a huge amount of infighting and drama - primarily between professors/faculty and the administration. Mostly centered around power and control. It's quite remarkable how folks can have such ego and hubris in any job let alone in places of education.