I had gotten into the habbit of drinking coffee all day long. My doctor had noticed a strange occurance with my blood pressure. If I can in early, my blood pressure was really good. If I came in later in the day, it was high. He eventually narrowed it down to the caffine intake. When I quit that, my pressure stabalized. Decaf has come a long way since I was little and I have learned to tolerte it decently. I don't really miss it, but sometimes avoiding caffine is a bit of a pain.