With the many note-taking apps on the market, I can understand why we are more likely to want to take notes for the sake of taking notes. But, I think that notes are most useful when we are able to interact with them (e.g., highlight, bold, draw) and build on them (e.g., connect ideas, develop new ideas). Learning new concepts and generating ideas is generally good for our health, so I wouldn't consider most note-taking useless, even if it is just to learn and reflect on ideas.