Because it would have made a bloody boring story.
I've just been on two long haul flights, so have been forced to watch a number of films to stop my head exploding. However, watching them on a 6 inch screen is a good way to kill a film.
I watched.
Salt - OK
Inception - Will be brilliant when I re-watch it on a decent screen.
Killers - bloody awful
On the way back, choice was becoming limited.
Eat, Pray, Love - a chick flick lifted by the presence of Julia Roberts.
Going the distance - a chick flick lifted by the presence of Drew Barrymore
The Last Airbender - actually OK for a kids film, if you can ignore the slightly dodgy title.