I remember a long time ago (come to think of think it was October 2005. I remember the time as I'd just lost my wife and travelled down to London to visit my sister) I went to the London Film Festival (I even remember the film, it was "Be Here to Love Me" A film about Townes Van Zandt) and afterwards we went into an lovely Italian Coffee shop somewhere in Soho (I think) and had the most delicious coffee. I remember my sister's partner telling me it was one of the oldest (if not the oldest) coffee shops in London. I drank that black and it was wonderfully smooth and easy to drink. Not bitter at all.
I sometimes try an espresso at home but find it too quick to drink. I also find I need a dash of milk to take away the bitterness. I also find that they taste better after a few drinks!
Sounds like a memorable experience.
Very smooth, somewhat sweet, and lovely tasting coffees, (such as Ethiopian beans), especially when they are not over-roasted, can easily be drunk without adding milk or sugar, and are lovely.
Personally, I find that when I am at home, (or in northern Europe), I like the concept (and taste) of milky coffees in the morning, especially in winter. Thus, Hario dripper coffee with milk (or cream), or French Press with milk (or cream), or (when out) a cappuccino, or sometimes, even a latte. I think the Italian idea of milky coffees in the morning can work quite well.
To my mind, black coffee is more suited to summer, and - or - to after dinner drinking. And almost always, (usually because no milk is available) when abroad.
But, then, each to their own.