@firefly,
On the other hand there are coffee may kill you articles all over the place as we speak.
I'm at peace with my coffee. Given refills and so on, I'm probably at 2 or 2 1/2 cups a day. Back in my lab days I filled up many cups with coffee, but I don't like it much lukewarm. I probably didn't sip as much as I thought I did. Toss.
Of the many possibilities of what will get me in the end, coffee is not anywhere at the top of my list.
And besides, now I'm too old for the latest promoted survey.