I think you hit the nail on the head.
Where you live is one thing, but how you face the world is another. As we age, it seems that we have increased challenges in the areas you note.
Trust becomes harder. Acknowledging our own faults and cognitive degradations becomes harder. Making decisions becomes harder. And desire to remain autonomous becomes stronger. Those things don’t jive too well.
One more thing to add: maintain a community of similarly-aged peers. Otherwise, one might feel like they are on an island.
This is based on my experience caring for an elderly family member.
Maybe it’s just important to stay generally social with folks of all types, as perspectives and conversations keep us young? Is that a good maxim?