My logic is that it's illogical not to believe in at least one or the other. I'm just curious as to how some people can say they don't believe in anything other than life on Earth. If you say there isn't a God, how can you possibly believe that out of the billions of billions of planets, that Earth was the only one that managed to start life. If you say there aren't any aliens, how can you say there wasn't a higher power involved in our creation. Just my two cents. I personally believe in God, and I don't rule out the possibility of aliens. What do you guys think?