Because you like Leonard "Bones" McCoy in Star Trek
Arthur Dent is an incredibly normal man on an incredibly abnormal adventure. See them in The Hitchhiker's Guide to the Galaxy.
Will Byers is just like any other twelve year old, except he's stuck in another dimension. See them in Stranger Things.
Murph is inquisitive, compassionate, and stubborn, with a passion for science she shares with her dad. See them in Interstellar.
Boomerang is equally skilled at tossing boomerangs and tossing back beers. See them in DC Extended Universe.
Raj Koothrappali is an astrophysicist who sees stars when he feebly tries to chat up women. See them in The Big Bang Theory.
Ethical but anxious, Chidi Anagonye approaches life like a problem to be solved. See them in The Good Place.
Sometimes being a supportive girlfriend like Ophelia doesn't work out too well. See them in Hamlet.
Peter Venkman's "research" projects are designed to get undergraduate students to sleep with him. Though it turns out he can bust ghosts. See them in Ghostbusters.
It's a race against time to develop his theory of the origins of the Universe before Stephen Hawking's body and mind give out. See them in The Theory of Everything.
Dustin Henderson doesn't let the bullies get to him. He's secure in who he is and that his friends have his back. See them in Stranger Things.
When he’s not working at the banana stand or awkwardly hitting on his cousin, George Michael tries his best to appease his father. See them in Arrested Development.