My hunch is that this is because they are paid so much more than they feel their efforts are really worth - a thought that tips them straight into the it 's-all-meaningless abyss.

我猜想，这是由于他们的薪酬远远高于他们心目中自己努力的真正价值——这种想法让他们落入了“一切都毫无意义”的深渊。