I own a coffee roaster with eshop and over 100 corporate customers. I love coffee.
At the same time, I believe none of the "studies" claiming health benefits of it.
One only has to study what it does to your brain to make a sound conclusion. (or read some of those studies and look at the bogus methods they often use)
It also affects sleep in a negative way, with poor sleep being at the root of most health problems including cancer ... (lookup stuff on sleep by Matthew Walker)
Likewise, I don't know what to think of all the "coffee is good for your heart" studies that surfaced in the past decade. It used to be that coffee was clearly bad for cardiovascular health then with the rise of Starbucks and global markets it became huge business and suddenly studies making ridiculous claims (like "10 cups of coffee a day is fine, science says") started to appear.
I can't see how something that unnaturally raises your adrenaline, cortisol and blood pressure (on daily basis for most) can be that great for your heart.
Finally, most people drink coffee on empty stomach, something that can easily lead to ulcers or even worse. Caffeine irritates it and high acid doesn't help either (reason why we add milk to coffee - it neutralises the acid) ... I find the rise of the hipster coffee brands pushing highly acidic brewing and roasting methods problematic.
But the fact is, nobody is telling you the full truth. Take top 1000 google results for coffee, it's 90% sellers, affiliates and journalists. People either make money from coffee or are addicted to it.
I love coffee myself, but I don't believe none of the proclaimed benefits. I consider caffeine a stimulant ... it's good to stay off it and use it's power selectively ... at the right time for the right kind if work, not mindlessly every morning.
Finally, I appreciate the cultural aspect ... like hanging out in Viennese style cafe, read something or engage in 'stimulating' conversations.