Hobbies used to exist as a way to entertain ourselves. If you had some extra time, you collected stamps, or watched birds, or built ships in a bottle. You sought out activities to stimulate your mind. Hobbies were an essential part of life because the alternatives were limited. If you wanted to numb yourself, your choices were basically alcohol or opiates.
Now, so many of us seek out ways to be entertained. We have an endless supply of black tar television, internet, and all matter of stimuli that requires no effort from the viewer. And of course, it’s so much easier to be entertained than it is to entertain yourself. So we do. And we get dumber. But remember, hard work is never wasted.