Used to study and be a good boy. Then it just got tiring to work hard for little to no recognition and so that parents can get mad at you when you decide you don't want to put in all that effort to make things perfect. Meh, wasted all that effort on the easy courses of 'advanced' classes in elementary school, middle school, and the AP classes in high school.
And guess what? College is full of busywork too! Almost graduated and I can count on one hand all the useful, applicable things I learned after 4 years. It's just a giant beaurocratic hamster wheel designed to show big businesses that you can put up with their bullshit and work their minimal pay jobs they overwork you in.