Because you like Clementine Kruczynski in Eternal Sunshine of the Spotless Mind
Tonya Harding has been shoved around her whole life. She just wants to feel free. See them in I Tonya.
Beware! Anton Chigurh carries a coin with him, which he forces his victims to flip to decide whether they will live or die. See them in No Country for Old Men.
Anna Karenina doesn't want to be a respectable woman any more. She thinks respect was invented to cover the empty place where love should be. See them in Anna Karenina.
It's certainly easier to get great footage of crimes when you can guarantee they'll happen. See them in Nightcrawler.
Mr. Blonde is the undisputed leader of his pack of suited-up outlaws, with a stoic and serious demeanor, and a penchant for bloodshed. See them in Reservoir Dogs.
Jack's big imagination is never limited by his incredibly cramped surroundings. See them in Room.
Donna Pinciotti is strong, independent, and empathetic. No one messes with her. See them in That '70s Show.
Satine cynically gives up on love so she can advance her singing career. But she meets a dreamer who reminds her there's more to life than ambition. See them in Moulin Rouge.
Herion is Mark Renton's favorite drug. He sniffs it, smokes it, swallows it, sticks it up his arse, and injects it into his veins. See them in Trainspotting.