With tea, a few people like unsweetened black tea and have always experienced it as having flavor (though there's still the usual acquired-taste aspect of bitter/tannic things). Others, like me, find that without sugar it's just fragrant water that doesn't get experienced as having taste, but they like it that way. I haven't found anyone who's actively learned to enjoy sugarless black tea in the way I would like to.
I enjoy sugarless black tea. I didn't use to. I got into through green tea (which I admittedly still prefer in the general). I think drinking a lot of green tea and getting pretty into it (trying lots of different loose leaf types, learning about ideal steeping temperatures and times) got me used to the basic form of tea, after which it's a lot easier to get into black tea.
Previous thread
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
Notes for future OT posters:
1. Please add the 'open_thread' tag.
2. Check if there is an active Open Thread before posting a new one.
3. Open Threads should be posted in Discussion, and not Main.
4. Open Threads should start on Monday, and end on Sunday.