I don't know if internet is really the culprit to how easy it is to waste time. We have long created enough distraction to fill a entire lifespan.

Before I've encountered any digital computing device, I used to just play Sudoku during class. Or read novels; I had a textbook that carved, inside which hid a small novel. Or, just day-dream and think about stuff.

On the other hand, I enjoyed Sudoku and novels. I don't consider them to be a complete waste of time. In retrospect, they made my childhood better.