Well there is no shortage of people who like breakfast (or are in charge of selling people breakfast) and hand wave about it being "the most important meal of the day". The truth is probably people have different metabolisms and if you are hungry in the morning you should eat and if you are not you shouldn't.

And that's almost exactly what this post suggests:

> The bottom line is that the evidence for the importance of breakfast is something of a mess. If you’re hungry, eat it. But don’t feel bad if you’d rather skip it, and don’t listen to those who lecture you. Breakfast has no mystical powers.