How many of your CPL classmates are flying 7 years after graduation?
I'd suggest that should you feel the need to ask the question and have gone to the trouble of itemising the numbers who have already tossed in the towel that you should do the same. Those poor buggers who are only instructors! Imagine that, being paid to train people in an activity they once had such a passion for! I think the industry would be better without people who think the left hand seat of some turbine powered machine with lots of devices to do the job for you is the end goal. I work with lots of people who have achieved that goal and they are no happier. Yet I recently sent a just retired 4 engined jet pilot on his first rag and tube tail dragger solo and he was over the moon. They are the types who should be in this game,they enjoy every phase of their aviation journey no matter how difficult it might seem.