When you start thinking in Billions of Years, well, the mind just sort of locks up. It's all just too overwhelming. We have a brief time on the planet, in the guise that we happen to be in at the moment, and every day gets more and more precious as time unrolls.
We are told we must "be patient," and to "learn how to wait," but the waiting really is the hardest part. Especially when you become aware of that incessant ticking... tick, tick, tick...
Yes, that's the sound of a life dribbling away.
But then, back to those Billions of Years. We are talking about Billions and Billions and Billions. And many of these Billions occurred well before you were even a glimmer in the eye of your forbears. And it's a good bet that there will be Billions and Billions and Billions more well after you are not even a wisp of a trace of a gnat's eyelash.
So you came in late to the show, and you will leave early, well before the Fat Lady Sings. And still, you must wait, take your time, take your turn, stand in line, and well, see what happens. That is a hard row to hoe, Baby!