Speaking for myself: It's probably been at least 15 years since I ate breakfast consistently. Skipping breakfast started out as a dislike for breakfast food (yea yea, grab your pitchforks), and as I moved into high school and college, it just never seemed that important. When I wake up in the mornings, I rarely ever find myself feeling hungry so I figured, why bother? It never really had a tangible effect on me as far as I can tell. I don't have any physical health problems linked to nutrition and my energy levels aren't particularly any lower. Lunch is so close to breakfast (I wake up at 8AM, and lunch is only ~4 hours away) that I just hold out and eat a larger meal then. I'm a very active person, so surely if my workouts were in the mornings instead of the afternoons or evenings then I would need some food first thing in order to get myself goin'. But as long as I can keep my schedule as it is, then there's not much worry about eating breakfast. I'd say that it truly depends on the person, their body type, and their specific nutrition needs. If you diabetic, or anemic, etc., then you definitely don't want to skip a meal. If you find yourself getting light-headed, grumpy, weak feeling - eat some food! Human beings were originally hunter/gatherers, and conditioned to be able to survive multiple days without a "proper meal" (https://www.nationalgeographic.com/foodfeatures/evolution-of-diet/ - solid read), and the idea of the modern diet is debatable.