Some of the stuff that you have to learn may not appear relevant at the time but as you progress in your career it may do and may even save your and your passengers lives! It is also needed to sort the "men out from the boys".
Years ago I spent a brief period instructing in the ground school of a well known (now defunct) approved flying training organisation. Apart from everything else we did, a correspondence course in the ground subjects was run. We alsways tried to return marked assignments to students by return of post, but one hopeful never returned assignments on the navigation part of the course. It was my job to contact him to find out why. "Oh" he said, " I don't understand navigation so I dont bother to do it."
er... and he wanted to become an airline pilot?
P.P.