If coffee would be bad for you I would be dead. It's basically the way I ingest H2O. I'm so resistant to caffeine that I drink my last cup just before bedtime.
I’m not too crazy about espresso, I had enough of them in my 40 years in Argentina but I am though very obsessive with the brewing of my coffee; If it sits in the coffeemaker more than 3 minutes it’s no good anymore… the sugar roasted on the beans caramelize and give it an awful taste.
One fact that might interest those with concerns about caffeine: Bold coffee has less caffeine than light coffee. Also cheap coffee like Folgers or the like has too much caffeine and it’s very diuretic – bad for cycling if you have to stop to pee too often.
Regards,

Pablo