I know nothing, but to me, there is "why," and there is "how." The why can never be proven and the how is fact. Religious institutions try to tell you "why" you are here, but they can not. They can only tell you why they think you are here.
In 1 billion years, there is a very good chance that we will not exist, so what's the point to any of this? Literally that. YOU are why any of this has a point. If you want to sit and stare at the stars, then that is why you are here. But then that is me telling you why you are here.
Why will always lead to how, which will lead to why, which will lead to how, that leads to why, then to how....ad infinitum.
From the movie "City slickers". The meaning of life is one thing. And that is whatever you are doing.
Just the thoughts you were wondering about, from a stranger in the wires.
The biggest threats to civilization are self-centered narcissistic rich people.