+1 on questioning the need for a stove for a day-hike. Heck, for a day-hike you can take fruit, cold cuts, pepperoni, cheese, or other stuff that would just spoil on a longer hike (and that you always find yourself craving at the end of that longer hike).
But if, like others above, having a warm meal is an aesthetic thing for you, heck, take anything. Your pack will still be light without the shelter and sleep system. If you are fanatical, the titanium mug and esbit thing sounds handy.