A friend asked:
"What if, just a hypothesis, what if I wasn't right, and it wasn't all ultimately meaningless in the Big Picture?"
I'm sure everything is used in the big picture, even if illusory.
The problem is the big picture is too big for human minds. Perhaps the horrible destruction of Earth is necessary for the spiritual salvation of the rest of the galaxy, and we follow on another planet later. *We* don't know!
And we don't know need to know. We just need to know that it's all right, and to follow the next bend in the river.