We live inside an explosion and mistake trajectory for free will and we talk about nothing. We just perform meaningless tasks and boggle at the scope of existence and how miniscule it makes our lives seem.
We are each a record of failures and success and sure time is an illusion but how we perceive it is all of who we are. A loosely held collection of memories and half recalled facts. Most of, but not all of, a thousand different stories and opinions. Piles of electrified dust and water in the shape of people haunted by the memories of where they've been. We are ghosts inside homunculi all hoping we're not going to stop.
We will, though. Stop, I mean. What we do and where we've been will become meaningless in the grand big picture. Our smiles will be forgotten, our laughs, too. If we're lucky our names will be spoken in a hundred years, but most of them won't make fifty.
I don't know how to explain this, but here goes: That's why all of it matters. All of it. All of us. The big picture is every thing. The small ones are everything