I don't know, but given the extreme rarity of there being even a speck of life on any planet, I don't see why anyone would not believe in God. They say the earth is around 4.5 billion years old. If you look at a complex organism, and think about all of the chances its ancestors got lucky with, you begin to wonder how there are so many different working species. It doesn't seem like 4.5 billion is a likely enough time for the earth to have made such a complex product. It seems it would have been so much longer (unless we're really lucky). I know that 4.5 billion years is an already incomprehensible amount of time, but how do we know that the first sign of life didn't begin when the earth was 3 billion years old? Or even older. Not to mention how many times it took until there was a spark of life that would exist long enough to reproduce. How many sparks failed at creating the meaningless drive of growing and reproducing? How many colonies died before one survived? As the life forms became more complex, it gets even worse. There is definitely some ground to theistic thinking. But when did life first begin and become succesful in an atheistic opinion?