Doctors go through significantly more schooling and receive significantly more professional development — yet they are still perceived with respect as professionals who care about their patients. Why can't we do the same for teachers?
Because peoplegenerally have much less exposure to doctors and when they are they're desperate for either treatment or hope. Both of these contribute.
Also, medical training is much harder than education. There are teachers at every average large high school who could have been doctors but they're a minority.