Because you like Maria von Trapp in The Sound of Music
Juliet Capulet falls head over heels for her rival family's resident sweet talker, Romeo. See them in Romeo & Juliet.
Frodo might have carried the ring, but Samwise Gamgee carried the ring bearer. See them in The Lord of the Rings.
Wanting more out of life, Pam Beesly has a job she isn't crazy about and is engaged to a guy she's not sure is "The One." See them in The Office.
Molly Weasley runs a household teeming with magic: gnomes run around the garden, dishes wash themselves, and noisy ghouls rule the attic. See them in Harry Potter Series.
Alex Danvers is a brilliant engineer tasked with alien threats, and one of those aliens is her adopted sister Supergirl. See them in Supergirl.
Donna is boisterous and spunky traveller of the TARDIS, exploring worlds beyond the simple mundane enterprises of Earth. See them in Doctor Who.
Andrea Sachs' boss is not happy unless everyone around her is panicked, nauseous or suicidal. See them in The Devil Wears Prada.
A karate master/rocket scientist/squirrel, Sandy Cheeks is the only one who can clean up the other resident's messes in Bikini Bottom. See them in SpongeBob SquarePants.
How lucky are we that Arthur Curry, the King of Atlantis, hasn't taken over the surface world? Very! See them in DC Extended Universe.
Not only will Emmett Brown's time-saving gadgets help you travel with ease, his tinkering on your car will help you get wherever you need to go. Fast. See them in Back to the Future.