I don't think I've told anyone my eldest dream, either. It adds to my difference I think, as most people when they're kids dream of being a firefighter, a nascar driver, a youtuber, etc. Not saying that those are bad, which they aren't, it's just I'm of a different "genre" of thinking? And that's not bad either! Ever since I was a kid I just wanted to be immortal and watch humanity thrive and grow among the stars, and help achieve everything to that extent. And for that, I see a lot of my dream in Elon Musk. That makes me happy someone is doing it!
I do think about it a a lot still, and how one could improve different parts of life, society, and the human experience in general. I hope to have this dream realized thanks to AI and the upcoming possible immortality for our species!