I don't know,I like what is considered "sad" music too..it depends how you see it.I mean,I'm not a Adele's fan but she has great musics.I'm a fan of Lana Del Rey's works and she can be considered "sad" but she's amazing.
i dont like adele cause she's so depressive, but i like three of her musics, they are really good: set fire to the rain, someone like you and turning tables. the rest is shit