Your private keys are out there—sort of.
There's this site called keyslol that lists every possible private key that's ever been generated (or could be). Yeah, yours is on there too, and in theory, someone could hunt it down and swipe your crypto. But good luck with that. Ethereum addresses total 2^160, a mind-boggling number.
For context: Earth has roughly 7.5 × 10^18 grains of sand, about 2^76. Imagine hundreds of Earth-like planets for every single grain— that's the scale of addresses out there. The site itself has 904,625,697,166,532,776,746,648,320,380,374,280,100,293,470,930,272,690,489,102,837,043,110,636,675 pages.
If you somehow track down mine, hats off to your dedication 🙌