If you are in paid J on a night flight from YYZ or YVR (as opposed to upgrading or lowest points reward), I simply can't fathom why you would want to eat the dinner onboard rather than grabbing a much nicer meal in the Signature Suite and going to sleep as soon as you board. Even if you don't have time for the full sit down dinner, you can grab something pretty decent from the buffet.

I make sure the food doesn't go to waste by having the dinner as my breakfast.