Because you like Monty Burns in The Simpsons
Her unhappy childhood has left her unsure of the existence of happy endings. Mary Jane Watson hides her pain beneath a joke and a smile. See them in Marvel Cinematic Universe.
Lying is the most fun a girl like Alice can have without taking her clothes off. See them in Closer.
Steve Stifler is more than just a dude with a hot mom. He's also rude, profane, and obnoxious. See them in American Pie.
Sophie Sheridan is a proud and independent woman who hardly ever looks before she leaps. See them in Mamma Mia!.
V is a violent anarchist with literally nothing left to lose. But, he might have a point. See them in V for Vendetta.
Clarice Starling is patiently working with one serial killer to stop another. See them in The Silence of the Lambs.
This mathematical genius doesn't have time for small talk; Alan Turing needs to break Enigma, the Nazi's cipher machine. See them in The Imitation Game.
Felicity Smoak is a brilliant hacker who nonetheless becomes tongue-tied in front of attractive men. See them in DC Extended Universe.
Susan Pevensie is sensible, practical, and fiercely protective of those she loves. See them in The Chronicles of Narnia.