Fine, if we're already having relegion discussion. First off, I don't believe in god, never believed and have all the reason to think I'll never do. That aside, the only reason why I can explain why there are still so many religious people despite all the scientific explanations of the world's creation and the biological evolution of the human being is the necessaty of a person to "feel the help of someone else". If you don't believe in god, and whenever you face an obstacle in your life, you face it alone and no one's gonna help you. However, if you believe in god than there is always someone beside you who is ready to help you and whatnot, and even if your earth life sucked, than you will still end up in heaven where you can do whatever you want.
Not everyone can live with the thought that they are alone in this world, and everything they want to achieve in this live depends on themselves and not some scientifically unexplainable being.