Curiousity was an eventual answer to my question of how we came to be. I have been pondering over this from a number of years now. The way I see it, as time goes by, we unravel more and more mysteries about the universe. Core theories change, we discover new things that don't fit in our current compass. Funnily, these things are new to us, but have been in existence since the dawn. What pushed us to keep on exploring and find answers, curiosity.
We still know only so little about the universe even now, difficult to affirmatively say, that our existing theories would be correct.
Anyway, even when we base out the exact theory, we still can keep on asking what created the most fundamental particles that define our theories. This seems like a never ending loop, so eventually I strongly think it has to end in nothingness.
Also, one very important realisation that I had was, we are live in our very own worlds. I am just a piece of flesh with consciousness. I will never be able to perceive what you sense, or even cannot exactly replicate what I sense to you. We are living all alone in our bodies, and that's a fact. Which honestly makes everything relative, including reality, perception of time. If I had no consciousness, I would not have been able to explore and unravel the universe (or even the smallest of things). The key driver is consciousness.
Even within conscious beings, the key driver is curiosity. Otherwise you wouldn't want to have new experiences, get new ideas. You will just be stuck within that time of your own.
Also, there's a lot of background from the Murphy's Law, individual experiences, life death, curious and non-curious states. I can further deep down if you are up for it.
The point is, today we are even having this conversation because probably this post or idea sparked curiosity in you. If it wouldn't have, probably you would never have known this idea, and all the potential realities that arise out of here.
Just like, observation is key in physics, but why do you even want to observe in the first place? Don't do it, it might as well start to be non-existent for you.