And the last two verses of Utah Phillips's wonderful All Used Up:

Outside of my window the world passes by
It gives me a handout and spits in my eye
And no one can tell me 'cause no one knows why
I'm livin', but I'm all used up.
Sometimes in my dreams I sit by a tree
My life is a book of how things used to be
And kids gather 'round and they listen to me
And they don't think I'm all used up.

And there's songs and there's laughter and things I can do
And all that I've learned I can give back to you
I'd give my last breath just to make it come true
No, I'm not all used up.
They use up the oil and they use up the trees
They use up the air and they use up the sea
Well, how about you, friend, and how about me?
What's left when we're all used up?

Just typing that in, I've got tears in my eyes.

Dave Oesterreich