I'm sure you've heard this before: "an organized mind is a happy mind." And it's true. Before I started using digital notebooks, I used to have the most unorganized life ever. I didn't know where anything was, and my brain was a mess of jumbled thoughts that were impossible to organize.
Thankfully, I learned the benefits of having systems and started using digital notebooks early in my life. Now I can't imagine going back to doing things any other way.