It might not have. Not every product on the market is designed for you personally.
Again, you keep saying that you have lots of exercise activities you know about and enjoy, and that the challenge you've had is overwork. Lots of other people don't have lots of exercise activities they enjoy, but measurement, and the feedback and sense of accomplishment from improving their numbers is something that they get positive feelings from which help counteract the negative feelings from an unpleasant activity that doesn't produce immediate tangible results (although, for people whose challenge is overwork, measurement can be an early signal that an imbalance is occurring that might be visible before tangible harm, so it could be useful for people whose situation is more like yours, as well; come to think of it, lots of people I know who have found trackers useful seem to be more like you in that regard -- several, for instance, are usually regular ballroom dancers, but have lots of other commitments and less-fitness-friendly activities in their life, so...)