In case you're wondering how I've been doing on my quitting pop experiment, I'm doing OK. Yesterday was my first day without any pop OR caffeine! I took some aspirin for a headache in the morning and crashed hard while the boys napped. Today I had some Diet Pepsi with lunch and had considerably more energy in the afternoon.
Eventually I want to get to the point where I don't drink pop at all any more, mostly to keep my kids away from it. I don't really have a problem with using caffeine occasionally, but addiction is never good.