I must be one lucky bastard then - it seems that I can't get addicted to almost anything, be it cigarettes, alcohol, or energy drinks. I did have once a alcohol problem, but I can hardly call that addiction.

I like coffee a lot, but I don't crave it, and recently I had cut it out completely - my blood pressure got out of control, and once I almost fainted in the office (I had 160/100). Getting rid of stress, coffee, and a blood donation did wonders.