No, it's your last resort if you must slow down. Better drivers learn to coast, down-shift, or tricks such as using the slight uphill grade of a roadway to adjust speed without resorting to braking.
Next time you are driving and have good visibility far ahead in a long line of cars (such as approaching a big hill) watch for the cars with the brake lights coming on constantly. These are the less capable drivers, and once you spot them you will see them making other mistakes. For example, one trick I've learned is to watch for the driver's hand resting on the turn signal stalk in adjacent lanes as I approach. This is a tell that they are intending to cut me off. When I spot it, I can back off to anticipate them, or be more aggressive and accelerate to close the gap they were aiming for.