Half-Drow for me. Half-Elves are great in general in 5E, and I like Half-Drow access to multiple spells (though their cantrip is pretty useless in this game) and bonus to Cha is great for warlocks, my favorite class. I also like them visually. I give them Drow skin with black hair. And finally, I get the fun of being a Drow (more or less), but more latitude to lorefully have a completely non-Drow background. I like my characters to be relatively normal individuals who get thrust into grand adventures unwittingly. Basically modeled after my first fantasy hero, Bilbo Baggins.
And I do have a background composed for a pleasant, laidback more or less normal warlock.
