To punctuate the dreariness

Mitch Leary:

[over the phone]
Watching the President, I - I couldn't help wondering why a man like you would risk his life to save a man like that. You have such a strange job - I can't decide if it's heroic or absurd. Frank Horrigan:
Now, why would a man like you want to risk his life to kill a man like that? Mitch Leary:
Don't you have a psychological profile on me yet? Frank Horrigan:
I don't put a lot of stock in them. Mitch Leary:
Nor do I. A man's actions don't equal the sum of his psychological parts. Doesn't work that way. Frank Horrigan:
Just how does it work? Mitch Leary:
It doesn't work, Frank. God doesn't punish the wicked and reward the righteous. Everyone dies. Some die because they deserve to; others die simply because they come from Minneapolis. It's random and it's meaningless. Frank Horrigan:
Well, if none of this means anything... why kill the President? Mitch Leary:
To punctuate the dreariness