You're totally, 100% burned out and you need to get out of this profession. Quickly. I understand where you're coming from and have been there and done that. But I sense a high level of bitterness and anger that I find almost dangerous...hence my advice to move on. I would stay out of health care, even human services, if I were you. With your great prose and writing, which describes in colorful detail your despair of this work, I do not believe you would make a good nurse, social worker, doctor....I can't see you in any profession that deals with human beings. Because all these jobs will see failure, cattle herding, pain, discomfort, ie- the ugly truth about human beings.
So I advise that you look into doing something very different for a career.
Really. before you hurt someone.