Seems like the older we get, it becomes apparent how long it took to
accomplish whatever it was we did, and how short a time we are here to
accomplish anything. The end of the road comes into view, which somehow
makes time speed up. As a teenager, I still remember thinking what a
fossil I'd be when the year 2000 rolled around, and I can't figure out how
it came and went in the blink of an eye.

One of my all-time favorite short stories was by Stephen King, and it was
about that very thing. It was called "My Pretty Pony." If you ever get the
chance to look it up, it puts some perspective on it.