What ultimately killed the dinosaurs was their own stupidity, greed, and short-sightedness. If they were smart, they would have developed a good space explorat

What ultimately killed the dinosaurs was their own stupidity, greed, and short-sightedness. If they were smart, they would have developed a good space exploration program and technologies to track potentially dangerous asteroids and adjust their orbits before they collide with Earth. They didn't bother to work to protect their only habitat, so it was rendered uninhabitable, killing almost all of them off. Hopefully, future inhabitants of Earth will learn this lesson in time, but I doubt it.