Most people are metaphysically and spiritually dead by the time they hit middle age. Their curiosity is stifled by their day-to-day obligations. They know very little about the complex world they live in. Don't even care to know. They mistake their narrow little reality tunnel as "life."
They cling to certainties and belief systems and hardly ever take the time to read profound books that'll shake things up. They "believe" what they've been taught, what they've been conditioned to think.
They are the majority and the whimpering world we all inhabit reflects this.