A collection completed can leave its owner missing the search more than expecting peace.

The pleasure was in the looking. Searching gave shape to weekends, a reason to talk to people, and a hope that something might turn up, and completion ends all of that at once. What arrives is not the satisfaction that was imagined but a quiet flatness, which can be confusing when everything went to plan.

If you are close to finishing something long, decide in advance what the next search will be. The point was never the finished set, and knowing that beforehand makes the last piece easier to enjoy.