I only drink coffee occasionally but if you need it in the morning to function methinks you might not be getting good enough sleep, or aren't giving yourself enough time to wake up in the morning before starting your day.
It might be more attributable to caffeine addiction. I like caffeinated beverages like coffee, pop, and some energy drinks, but I drink them in severe moderation. The most I'll have caffeine is a few times a week. Many times, I'll go a month or more without any.
My parents, on the other hand, became caffeine addicts at some point in their life. They need coffee in the morning, and often two or three times more throughout the day. Because the more consistently you're exposed to caffeine, the less effect it has on you, so you require more and more in order to sustain the stimulation. I think my parents are trying to cut down on their coffee intake, but it's put me off from drinking coffee daily, for sure.