Retreat, reflect, return
Being a writer involves stubbornly carving out time from life so that you have the space to reflect on it. You probably miss something if you permanently retreat into your own cave of rumination, but also you miss something if you are just completely immersed in your own stream of experience with no distance to step back and process it. I think logging is that middle ground; when you take field notes from the front lines of life, you have high-res shadows or your experience that you can bring back with you into your Writer’s Cave.