You have watched empires rise and fall, and you are tired.
Overview
You were not born, you were unearthed. Your soul has the mileage of a small civilization and the patience of a very old tree. Nothing surprises you anymore, because you are fairly sure you have seen it before, probably twice. You are in bed by sundown, profoundly suspicious of any new technology, and at complete peace with the slow passage of time. Young people exhaust you, loud noises offend you, and a good chair is your greatest earthly pleasure. You are not old, you are eternal, and you would simply like everyone to be a little quieter.
Telltale signs
Wait, is this based on anything?
Loosely, yes. Each answer leans on real psychology: how old you feel (subjective age), the way most people mellow with age (the maturity principle), and what we chase when time feels long versus short (socioemotional selectivity theory). The phrase mental age itself comes from Alfred Binet’s early intelligence work. We then mash it all into one cheerful verdict that is absolutely not a diagnosis.