Because you like Jean-Baptiste Grenouille in Perfume: The Story of a Murderer
A few millennia in the mortal realm have caused DEATH to be quite enamored of life. See them in Discworld.
Vincent Vega likes a good steak, a cheap milkshake, and killing a target without anything going wrong. See them in Pulp Fiction.
A stylish agent, Agent J would rather improvise than play by the rules. See them in Men in Black.
A powerful priestess, Melisandre is shrouded in mystery and lots of red. See them in Game of Thrones.
People make more sense to the hyper-logical Temperance Brennan after they're dead. See them in Bones.
V is a violent anarchist with literally nothing left to lose. But, he might have a point. See them in V for Vendetta.
After having his mind altered after a bad breakup, Joel Barish is not convinced that ignorance is bliss. See them in Eternal Sunshine of the Spotless Mind.
Ultron is security software turned evil mastermind. See them in Marvel Cinematic Universe.
A monstrous pirate captain, Davy Jones is quite literally heartless. See them in Pirates of the Caribbean: the Curse of the Black Pearl.
Miss Havisham is the creepiest old rich lady in town. See them in Great Expectations.
Don't tell anyone Kate Austen was under arrest when the plane crashed. See them in Lost.