The good things about books is they compel you to truly engage in an argument, an idea, a conception of the world. You can't opt out easily, and that means you ought to be focused. And that's incredibly important, because quality almost always mean quantity. Not only the amount of knowledge in the average book far surpasses 90% of what's on the web, but more importantly information does not come easy, and never has. If it's easy to digest, you most likely won't remember it, which essentially makes the whole thing a loss of time. Learning takes time and reflection. If you don't do either of these you're just consuming things on a surface level: you're losing the attention war waged against your brain.