Well, as a PCA national Certified instructor, a E. Paul Dickinson Graduate instructor, HOD coach, Dark Side DE instructor, ect, ect...
When someone ask me, why I'm willing to instruct, I point out that someone was willing to instruct me when I was a young pup, my way of giving back to the sport I love. You can't try to improve things if you don't get involved, so you can either sit back & ***** or step up and see if you can improve it. No matter what, you will still have control of your student & his or her car. I know many instructors who retech, the students cars, just to make sure they know what to look for.
Course, it does take a toll on your body & hair.
When I started.
After I got out of a students car
Really, only you can decide how much you want to give back.