I'll read or watch almost anything. Romance is my favorite genre. I haven't watched or read much lately though.
Endings are the most important part of anime and manga, to me at least. If everything was highly enjoyable, but the ending was awful, then I will most likely rate the anime or manga as ½ a star. The ½ star is my personal warning. When I’m searching for something I might want to watch or read again, the ½ star makes me pause and take a closer look. Either it was that bad/boring, or I enjoyed everything until the end ruined the experience.