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Bread is good for you, but as with anything we eat too much of anything is bad for you. Notice also if you have bread alot, in the morning you will feel a hole in your stomach, you will be starving in the morning. That's the effect of carbs. But lack of rest and sleep will cause eyebags to droop like bin liners.
I think the amount of calories remain pretty much the same if you are doing bread with butter. But you can make it healthier for you. A total whole grain bread with seeds, in it, might be higher in calories, but your body will use it better. It will digest better, and keep your blood sugar more stable.