Is Coffee or Caffeine Addictive? Why Coffee or Caffeine Become Addictive: Millions of the world drink coffee, most people of them, who drink a cup or two in the morning are much less probably to feel drained if they miss their fix next day. But people who drink 4 to 10 cups a day may crash and burn without their coffee. Why is that? Is the causes caffeine consumption? Coffee contains a huge amount of caffeine. The more coffee you consume the nastier you turns into. You can have the shakes, irregular heartbeat, high blood pressure, or insomnia from drinking too much caffeine what’s it about espresso that makes people over devour it?