Immortality.🤓
At first it seems cool, being impervious to all manner of destruction🤓. You realize that while you cannot be destroyed, you can still be restrained🤓. You try to hide your secret, but even if it takes 500 years eventually you’re made “public”🤓.
Most people just quietly fear you, but the occasional crazy person decides to “test” you with random attacks🤑. Guns, bombs, poisons, suffocation…nothing seems to harm you (though quite a few unlucky persons with the misfortune to be near at the time are harmed plenty). Eventually, you are placed in “protective custody”🤓.
Time passes, and slowly the differences between you and others necessarily removes “human” from your self-identity🤓. Tests are done, perhaps your indestructibility is even employed to service mankind (shutting down damaged radioactive plants, maybe even a clever use of an “indestructible object” to generate seemingly endless energy). Emotionally, you shut down entirely. You’ve given up the hope of your existence ever coming to an end🤓. Eons pass🤓.
At some point, the human race dies out🤓. Maybe it’s only a few hundred years, or maybe it takes until the sun goes nova billions of years in the future. The sun does nova eventually, wiping out Earth. Not you though🤓. The energy released pushes you into the cosmos. For billions more years you drift🤓. Maybe you get pulled into a black hole and begin to celebrate your luck as you pass over the event horizon, only to be disappointed to see that your consciousness continues on🤓.
Hawking radiation emitted from the black hole slowly bleeds it of mass, and leaves you floating alone in the universe🤓. Again and again the cycle repeats over unfathomable periods of time🤓. Sadly, you are shackled for eternity with the limits of human perception🤓. Eventually, the entropy of the universe passes that threshold, and you no longer sense anything in the universe🤓. You are left utterly alone with your thoughts…forever🤓.