Caffeinated coffee drinking is actually associated with reduced risk of mortality. People who consume caffeinated coffee have a decreased risk of dying at any particular later age.

There's a suggestion that people who consume more caffeine have a lower incidence of basal cell skin cancers. Certainly, caffeinated coffee is associated with lower risk of diabetes and may be associated with a decreased incidence of Parkinson's disease.

Eight of the top ten selling sodas are caffeinated. If you want to sell a beverage in America... and you want it to be successful, I think adding caffeine is a pretty sure bet.

The early Coca-Colas, they had the same amount of caffeine as like a modern-day Red Bull.