What is it about xanthine alkaloid compound?

Name your addiction. No, it's not the name of a new reality TV show. I'm literally asking you to name your addiction.

Coffee? Sex? Gambling? Mine is coffee. The sheer aroma of some ground beans is enough to calm my nerves and send me into ecstacy. But why is that this central nervous stimulant rocks my world? Well, accordingly to my wonderful friend, Wikipedia, it's because caffeine is a central nervous system and metabolic stimulant and is used both recreationally and medically to reduce physical fatigue and restore mental alertness when unusual weakness or drowsiness occurs. Caffeine stimulates the central nervous system first at the higher levels, resulting in increased alertness and wakefulness, faster and clearer flow of thought, increased focus, and better general body coordination, and later at the spinal cord level at higher doses.

And not saying I would ever want to - I mean honestly, why? - but should I choose to stop drinking this amazingly theraputic, aromatic beverage, I could expect the following withdrawal symptoms: possibly including headache, irritability, an inability to concentrate, and stomach aches may appear within 12 to 24 hours after discontinuation of caffeine intake, peak at roughly 48 hours, and usually last from one to five days, representing the time required for the number of adenosine receptors in the brain to revert to "normal" levels, uninfluenced by caffeine consumption.

Caffeine causes excess release of stomach acids during ingestion. When in withdrawal the stomach acid levels decrease substantially and can cause some stomach aches in certain people.[citation needed] The aches normally last between 24–48 hours and can be confused with constipation.[citation needed] Analgesics, such as aspirin, can relieve the pain symptoms, as can a small dose of caffeine. Most effective is a combination of both an analgesic and a small amount of caffeine.

We know what that means. Me no stop drink coffee.

And apparently, I'm not alone. In North America, 90% of adults consume caffeine daily. Yeah baby, glug glug glug. Stabucks loves ya.