The empty-nest moment is a renewal, not a loss — but it's a renewal that has to be worked at. The kids' rooms aren't going to repurpose themselves. The photo decades aren't going to organize themselves. The hobbies you put down twenty years ago aren't going to come back into the house unless you make room for them.
I've raised two children. I know what it takes to move a house from the kid-shaped life that filled it for twenty years into the next chapter. The work is part interior reconsideration, part archival, and part identity.