Just laziness on my part, when you are done with the checklist, get interrupted and start 15 minutes later you might want to still see all the check marks still there, but on the next day, you might be doing a different task.

This needs to be configurable because it depends on task frequency and how long a checked checklist stays relevant.

It might be overkill, just having an easily accessable (but not to easy?) reset button for each list might work as well.

Also, I haven't read the book yet, so my requirements might not be the best.