Is that really THE question?
Aren't we all a work in progress? Learning about what to worry about? Deciding how many worries we can juggle all at once? Putting perfectly worryable things to the side to concentrate on other worryable things. Knowing they all hit back real hard when we can't re-initiate the worry quick enough.
And isn't that the rub? Quick enough.
Its why we have other people to handle our medical care. Because while I have learned quite a bit about random medical things like genetic disorders, allergies and sensitivities, vision, dentistry, viruses, bacteria, human development, Aspergers, diabetes, and hypoglycemia ... I am still not a Dr of medicine.
Its why we have accountants and financial planners, insurance, restaurants (fast and slow), plumbers, mechanics, realtors, lawyers, movers, etc. Because we can't all be experts at all these things all the time. But slowly, over time, we can learn what we need to know but perhaps not all that we want to know, or even know what we should know. These things change. Sometimes rapidly. Sometimes without us ever realizing. Right up to the edge of "until we need to". Why?
We were distracted. Focused on something else. Juggling and prioritizing. Responsible for something else. And then it all changes. You get hit with something very hard. Time to refocus. Time to learn. Assuming you are still alive. Assuming you think something as hard hitting as this is likely again. Because, really, who wants to get hit like that again? I might be consumed by the worry and not function at all. I have to put that worryable thing down now. Maybe even put it away. I just cant do all the worry all the time.
This is but ONE perspective.
I leave you with this quote from Dr. Oliver Sacks^1: