Only if you want to, if you like, if it makes you feel good and if it supports you in whatever goals you might have.
Breakfast isn't the most important meal of the day, it's the most advertised and marketed.
You can thank the invention of breakfast cereals for making breakfast and specifically what we think of breakfast foods here in the US - waffles, pancakes, PopTarts, and the like - a thing.
Before then, breakfast was pretty damn similar to other meals with eggs, chicken, pastries, steak, lots of potatoes, cornbread, pie and leftovers.
Until physician/dietary reformer/health activist/entrepreneur John Harvey Kellogg ( the 1800s version of the celebrity doctor) decided people needed to say no-no to arousal, masturbation and sexual activity and hell yes to a bland diet, vegetarianism and genital mutilation.
Enter: Corn Flakes.
Kellogg's theory: participating in more exercise, drinking more water and eating a bland diet, like his original cereal - hard wheat granola minus the sugar coating of our modern day Corn Flakes - would reduce the effects of over-stimulation.
For Kellogg, eating more granola would lessen the urge to masturbate, thereby making you and your life healthier all around.
By the mid 1900s, everything was sugar coated; both the products AND the message.
Breakfast is the most important meal of the day!
Eat a good breakfast, do a better job!
High source of [insert nutritional buzz word here]!
Cereal companies had the upper hand, pushing a no-cook convenient "health" food into millions of homes. And we fell for it. Then they put cartoon characters on the boxes and we couldn't get enough of them or the idea of needing to eat breakfast.
What we used to believe
Eating a breakfast, we've been told, is the key to losing weight, staying lean, stoking the metabolism, being healthy and keeping our energy up throughout the day. Skipping breakfast will cause weight gain and is one of the most unhealthy habits to develop.
What we now know to be true
One meal isn't the make or break determinant in your health and research shows not eating breakfast has little to no effect on weight gain. In fact, because there are so many variables to account for when it comes to a person's health, breakfast research results are pretty mixed, making it hard to come to a direct conclusion.
Eating breakfast works for some people and doesn't work for others.
If you're hungry in the morning and feel really good after eating breakfast, go for it.
Contrary to popular belief, it won't increase your metabolism (neither does eating every three hours, or eating six small meals a day) but it can help you in developing and sustaining healthier habits.
By starting your day off with a "win" you may be more inclined to make better choices throughout the rest of the day. You might also be less likely to reach for more food as the day goes on. Breakfast might make you feel very satiated and satisfied.
If you're focusing on fat loss, it is your total caloric intake that matters more than how many meals you choose to split those calories up into or, at what times of day you eat them at. Food quality and composition matter too, of course, but as long as your breakfast keeps you within your caloric "budget" it won't drastically or immediately inhibit or stall your progress.
Make it work for you
Breakfast can prevent you from overeating at subsequent meals as well as set the tone for the rest of your day, but if you're nauseous in the morning or feel like crap after eating that early, don't do it. Try an early afternoon snack or meal or wait until lunch.
If you like breakfast and want to eat it but claim you don't have time to make it, cut that shit out. Make time. Or find something that takes less (or no) time to put together. It doesn't need to be elaborate- leftovers from lunch and dinner are usually easy to have on hand.
Embrace non-traditional breakfasts. Why should breakfast foods be the only thing you eat in the mornings? You don't have to stick to the stereotypical.
Not currently eating breakfast and feeling great about it? If it works for you, do that.
What to do
For sustainability and results, make your diet and nutrition strategy fit your life, not the other way around. You have unique taste preferences and a unique day-to-day lifestyle, work environment and schedule. Stop living by someone else's diet rules and make your own. Blindly following a diet or a program that doesn't cater to your individualism is setting yourself up to fail. You're an individual, with individual taste preferences, lifestyle, financial means and work, family and social schedule. The best way to eat is what works best for YOU. Not your neighbor. Not your gym buddy. Not your coworker or your mom or your significant other.
As with any nutrition strategy, it's important to tune into your personal energy and hunger levels and take your daily schedule - including training- into account.
But there's nothing inherently magical about breakfast.