100 Word Challenge: "Exit"

[This week's 100 Word Challenge is a little different. Instead of involving the inclusion of something, this week requires 100 words with the absence of something. Just for fun, I'm not going to tell you what is missing, except to add that the missing element is present both in this prologue, and in the name of this blog, but not in the story itself or its title. This story is called "Exit."]

"Sex, like most exploits, is pointless exercise. Rubbing, friction, moisture, effort, for one moment of pure joy? Not worth it. In this universe without end, nothing we do counts."

He wrote it, then stood. He looked. True? Yes. Nice? No. He wondered when he broke, when he fell, when the shroud covered his soul. Who listens to people in modern times? He looked down, then up to the writing.

"It's over," he whispered softly into nothingness. 

No one replied. Silence reigned. He left. It's finished. Finished? He felt finished. He shut the door. It closed firmly, like periods end sentences.