Why does George say the migrant workers who travel from farm to farm are the loneliest people in the world?

In John Steinbeck's "Of Mice and Men," George describes migrant workers as the loneliest people because they live a transient lifestyle, moving from farm to farm without lasting connections or stability. They often lack family ties and friendships, as their work is temporary and isolating. This solitude exacerbates their struggles and dreams, making it difficult for them to achieve a sense of belonging or purpose. The harsh realities of their existence contribute to a profound sense of loneliness and disconnection from society.