See... here’s where we’re going to disagree. I’m not concerned about city killing asteroids. We know without a doubt that it’s going to happen, in a big way. It is part of prophecy that will be fulfilled. There is not one thing we can do about it. It will happen in the course of time, according to God’s word. So we should spend our money on something besides trying to protect our planet from asteroids. Really, we should just give the money back to the tax payers and rest in God’s will.
Within 20 years humans will form a sustainable, reproducing colony on Mars that will grow more prosperous with every year. We have the technology to do so and several colonies are already being planned RIGHT NOW (without tax money). Within 1-2 centuries, we will robotically terraform the entire planet and seed it with life.
I don't believe ANY word written on paper by man is indisputable truth. Even if God truly “spoke” to those men thousands of years ago it is still only words on paper written by men. We should not give up and doom humanity on this planet because of that. That would be a self-fulfiling prophecy.