Simply due to the lack of instructing jobs around. I do want to instruct, but am equally keen to do non-instructive flying.
From what I've seen over the last 12 months of job hunting there is a lot more instructing work than other flying. Aim for the big schools to get a start.
RAA instructing would be a good start, instructors seem to be needed there. That may have changed with the Jab situation though.