How much caffeine do you take in regularly?

I’m just wondering about how much caffeine people take in, and if there are any side-affects to them in the long run.

Anybody who has drank a cup of coffee everyday and then run into any sort of problem years/decades later?

Anymore known, or experienced downsides to coffee that i should know about?

How much caffeine do you take in regularly?... and how much is a ‘good’, or ‘safe’ amount?

(just me being paranoid again… =\, but i loooove coffee and tea!)