Because you like Miles Halter in Looking for Alaska
Although Penny's friends have genius-level IQs, they regularly come to her for advice and insight. See them in The Big Bang Theory.
Tony Stark's interests include cocktails, beautiful women, particle physics, and saving the world. See them in Marvel Cinematic Universe.
Pepper Potts can run a company, manage an egomaniac, and take down bad guys, all without breaking a sweat. See them in Marvel Cinematic Universe.
Diana Prince is using a truth-telling lasso and super-strength to make Earth a little more like Paradise. See them in DC Extended Universe.
A fourth grader without a moral compass, Eric Cartman lives on KFC, Taco Bell, Pizza Hut, and Cheesy Poofs. See them in South Park.
An exuberant prankster, Naruto Uzumaki craves acknowledgement of any kind. See them in Naruto.
Bedside manner is for chumps, not the brilliant Dr. Gregory House. See them in House M.D..
Jim Halpert is a master at the art of making it through the work day, including participating in an office Olympics. See them in The Office.
A daring conman, Flynn Rider is so charismatic that you might not mind when he steals from you. See them in Tangled.
Armin Arlert was wrong. This world hasn't become hell; it's been hell. He just couldn't see it before. See them in Attack on Titan.