Why are so many people apparently suspicious of George and Lennie's friendship?

Itinerant workers usually travelled alone from job to job. Loneliness and isolation are the major themes in this book. When the other men see two guys travel together, they become suspicious. The boss of the ranch, for example, thinks that George is taking Lenny's money.

Itinerant workers usually travelled alone from job to job. Loneliness and isolation are the major themes in this book. When the other men see two guys travel together, they become suspicious. The boss of the ranch, for example, thinks that George is taking Lenny's money.