QUESTION: Why do you say that no life exists anywhere in the universe but on Earth? I am a born-again Christian, but I don't understand why God couldn't have made other "earths" or other life forms elsewhere in this vast universe. The Hubble Space Telescope recently found methane gas (an organic compound) in the atmosphere of a planet light years away from Earth. Methane is often one of the signs of life on our planet. Why not on another?
RESPONSE: If you are truly a "born-again Christian" as you claim, then you believe that Christ made our salvation possible by paying the full penalty for our sins. You also must believe that in order to do so He had to become a genuine man--body, soul, and spirit. He is the only God-man, fully God yet fully man in one person at the same time.
In that light, what about life on other planets? If you were an atheist evolutionist (Dawkins admits that evolution made an atheist out of him), life on other planets seems logical. Without God, life must have happened here by chance, so why couldn't life arise spontaneously from similar lifeless chemicals on other planets? But as a Christian, you believe that God created Adam and Eve and that for there to be other similar creatures with body, soul, and spirit, and the free will to love and obey God but also to rebel, He must also have created them.
Why would God create such beings? Would it be because He hoped that the next "Adam and Eve" would not use their free will to take their own way? You must know that any created beings less than God (who was not created) would make less-than-perfect choices and inevitably rebel, seeking to be like God. They would be susceptible to the same temptation from Satan that destroyed the human race. Surely God would love them and want to forgive their sins, but in order to do so He would have to become one of them and die for their sins.
God knew that Adam and Eve would rebel and He made provision for that. He wouldn't "try again and again" to create a perfect creature who would not sin. That would be impossible because everywhere that there were humanoid creatures, it would be true of them as of us, "All have sinned and come short of the glory of God."
Why couldn't Christ's death on this earth be sufficient for the salvation of others on other planets? You know the answer. Christ became a man in order to redeem men. Believers are "the body of Christ." How could other humanoids on other planets also be "the body of Christ" who is "the same, yesterday, today, and for ever"? I think you know.