“If there’s just one kind of folks, why can’t they get along with each other? If they’re all alike, why do they go out of their way to despise each other? Scout, I think I’m beginning to understand something. I think I’m beginning to understand why Boo Radley’s stayed shut up in the house all this time. It’s because he wants to stay inside.”
– Harper Lee
To Kill a Mockingbird, Chapter 23. A growing up Jem Finch doesn’t understand why people would want to show hatred and prejudice towards each other. So he sees why Boo Radley would want to stay inside his home to get away from such people.