Not only do I do this, but I'm glad I do this.
It helps me pay closer attention to my overall nutrition to base my lunch on my breakfast and my dinner on the previous two meals. I like being able to look over what I've had so far and think, "Hmm, not enough vegetables--stir fry time!" or "Ooh, who has two thumbs and room for mashed potatoes? THIS CHICK!"
This habit has become so ingrained in me that I think I'd actively seek to balance stuff out even if I were no longer paying attention to calories. Hunger matters too, but deciding WHAT to eat to assuage my hunger--that's often a conscious plan based on a combination of what sounds good and what's best for me.