I kept waiting for that loneliness and nervousness to make me want to go back. But it never did.
We cannot be born, and we cannot die. Like all energy, we can only change shapes and sizes and manifestations.
The prospect of a world that contains neither humans nor Z's is not so terrifying. Nature will take its world back. Animals will frolic and fight. There will be no lord of the manor, which is not such a bad thing, because it seems to me that people have done a pretty poor job of guiding the biosphere for the last few thousand years.
That's what I realized: if I did get her back somehow, she wouldn't fill the hole that losing her created.
I couldn't hear a thing in the world but you. And it was so cold then, and so silent, and I loved you so much. Now it's hot and dead quiet again, and I love you still.