What is an "average-sized cup of coffee" supposed to be? Whatever it is, it has a lot more than 65 milligrams of caffeine. 5 ounces of drip coffee has 100-130 milligrams, so an average-sized cup being 10 or 12 ounces has maybe 200-300 milligrams, not 65.

The "increased attention and alertness" come at the price of addiction and withdrawal, causing markedly decreased attention and alertness, not to mention a myriad of bad health effects.

Caffeine does not lower but raises the risk of diabetes. One reason is that caffeine causes the user to drink more sweetened drinks. That is not the only reason. The drug by itself increases risk of diabetes.

I highly doubt that caffeine lowers risk of cardiovascular disease. It probably raises that as well.