Its a people thing not a thing thing
I used to instruct (part-time) like whisperbrick but I too got rather bored with it. I began to feel that I was wearing an old T-shirt
It does get repetitive and after a while I started to worry
about things like the insurance cover.
It became like a job but unlike my day job it paid about
the same as the office cleaners.
The medical & renewal fees increase and the aircraft get older and older. The technology is so old in this game its laughable.
Essentially there is no investment/money in this game and for many of us its a hobby out of control.
This whole industry is artificially subsidised by obsessive (largely male) pilots who are often in a rut. They have invested to much too quit and are clinging on by a thread.
I think that the 'professional' training that instructors and the like
have to go through takes away ones perceived freedom to enjoy the experience as they become obsessed with the mechanics of it all....
Its best to be an instructor if your sociable and like a good view
It part of the entertainment business at the PPL end!