I stopped drinking 99% of soda about 7-8 years ago after watching a roomie of mine drink atleast a 12 pack a day.. and my grandfather getting diabetic as he got older.. neither affect me directly (except maybe a minor genetic disposition to diabetes) but between the carbonation and the sugar content I just couldn't drink the stuff anymore. I switched to tea/coffee as a caffeine source, drank way too much coffee for a while, and droped that to 0 for a couple years.. now I can have a nice cup of black tea or coffee in the morning, but no more per day.

All in all, I feel tons better, but I guess cycling to work every day (7 miles round trip) helps too.

HFCS is crap, yet another thing added to foods to make them cheap and have a shelf life measured in decades.