I don't see how we could be the only life forms in the whole entire universe. If life begets life, and we came from the universal "Big Bang", then there should be other forms of life out there in the vast universe. It makes perfect logic and sense. Maybe God sent other sons of His to other planets as well as this one if one is to believe in the stories of the Bible. No one here can honestly say though. And I don't believe that humans and animals of this planet make up the only forms of life either. To believe that is to be close minded and it's to limit God's abilities as well.