Because you like Meggie Folchart in Inkheart
Though raised to think of himself as a monster, Quasimodo has a heart that holds nothing but compassion. See them in The Hunchback of Notre Dame.
Stranded on Mars, Mark Watney is armed with quick wits, an electronic diary, disco music, and an undying resolve to make it back. See them in The Martian.
Even the smallest person can change the course of the world, if he's brave enough. See them in The Lord of the Rings.
There are certain souls the surprisingly sensitive Death would rather not reap. See them in The Book Thief.
Gollum is slimy and seething with hatred, the last person you would want to meet in a dark cave. See them in The Lord of the Rings.
Susie Salmon has a big heart, even though it's not beating anymore. See them in The Lovely Bones.
Celie Johnson says she's poor, black, and may even be ugly. But dear God she's here. See them in The Color Purple.
Phoebe Caulfield is a wise-beyond-her-years 10-year-old with an empathetic spirit. See them in The Catcher in the Rye.
Aragorn is the one true king, a title he is too humble to accept. See them in The Lord of the Rings.