You listen to any monologue on late-night TV or just in general, to people talking, and there's always a joke at someone's expense. It's sarcasm; it's nasty. Kids grow up hearing that, and they think that's what humor is, and they think it's OK. But that negativity permeates the entire planet.
God has wisely kept us in the dark concerning future events and reserved for himself the knowledge of them, that he may train us up in a dependence upon himself and a continued readiness for every event.