I would hope the challenge of making a career from instructing, and moving on to advanced instructing / examining would make it more attractive and less monotonous.
but only one way to find out.
btw, your advice IS appreciated, you are right, the most sensible thing would probably just be to stop. unfortunately I can't.
anyway, I have theory exams in 4 days so I'd better get back to studying or the only thing I'll be flying is a computer game!
regards
D-G