I think maybe I worry that if the interesting things are left as "nice to possibly do", they won't happen just because of inertia. (I love the internet dearly, but by god it makes it easy to spend a very large chunk of time doing very little at all, & then you feel unsettled & dissatisfied later. And it always starts with "I'll just check...".)

I read a thing, recently, about mindfulness & asking yourself what you *actually* want to do with any given bit of time. This is maybe a thing that goes better with the "possible interesting things" list.

Thinking of lists as explicitly not meant to be completed is probably a helpful thing, as well :-)