I may be thousand years old. Right? The molecules, the atoms, all cells that shaped me, they may be billions years old.
To think about our whole life is sometimes scary. Scary to think maybe there's another planet where you become a president, or Taylor Swift's best friend, or David Beckham's children? Scary to think that maybe there's another life. Another life exists, beside us. Beside all the life that we know. They may breathe in carbon dioxide and breathe out oxygen. Maybe they walks on sky instead of on ground! Or even, maybe they didn't walk; they swim. Or maybe there's another element besides those 4? The possibilities goes infinite.
I got this mind-blown situation every-freaking-time I watch One Strange Rock. Isn't it incredibly unusual to think about our planet as a one strange rock? It makes sense completely. Yes, our Earth is just one strange rock. One. Strange. Rock. Can you read that slowly, deeply, with Neil DeGrasse Tyson's voice in your head? (Yeah, I know Will Smith is the host but I think Neil's voice suits better inside our mind). Life maybe just happen in our planet. Which is means we're all alone in this universe, and it's not less scary than the thought that we're not alone in this universe.
It's impossible to not question about our existence.