Speaking of sugar- when I was a young adult I always put at least 2 tsp of sugar in my coffee. Slowly I weaned myself off the sugar and now can't tolerate even a grain of it in my coffee. I also don't like any kind of flavorings. Someone mentioned not liking to order it out. Same here- it's either too weak or just doesn't taste good. We used to love getting it at a popular coffee place but when my favorite barista left so did I. Nobody could make the coffee to taste the way I like it.
Other than coffee, I'm not too fussy about things