I didn't spend the time reading the comments to see if this has been said already, but crossing your eyes works but learning to diverge your eyes is better in some situations. It's easier to learn to cross because you can just look at your nose, and you can bring together two images that are further away by crossing than by diverging. But diverging is the way we are normally (when looking across the room say instead of at a book in front of us) so it's more comfortable.
It's foolish for the pure utilitarian to leave the human factor out of the equation. Or perhaps his error is to consider dollars to be the ultimate commodity. Really, we as humans work for a much more valuable commodity than money. The fighting of the war in the first place is a human attempt at creating a good story (of a country that actually realizes peace and prosperity). The saving of one man (whether soldier or civilian) is yet another attempt at such a story. It's the human way.
I know someone that quit his job because he was making enough money on advertising alone on just Windows Phone 8 apps. He's got even more apps in the store now, so I don't know how much he's making but I think he's doing very well. Then there's Windows 8 which promises to be much bigger!