I drank only one large cup of decaffeinated coffee, yesterday. I have come to believe that I truly love a hot cup of coffee in the morning. Maybe it's the cream and sugar. Maybe it's the warm liquid. But it's not the caffeine, at least, not anymore.
Most people don't know that decaffeinated coffee actually does contain caffeine! Levels can be shockingly high, as Consumer Reports reports. According to that article, most decafs tend to have less than 5% of the caffeine as a regular cup. However, it could range from negligible amounts all the way up to maybe 33%! In extremes you might even see a cup of decaf with 50% of the caffeine as regular, if you take the highest levels of caffeine in a decaf brand and compare with the lowest levels of caffeine found in regular.
Still, as Scott said last night, if all you drink is one cup of decaf every day, it is probably safe to say that you aren't addicted to caffeine, anymore.