I think it's natural for people to "need a god" - it's a sense of relief. People are afraid to die - afraid of what happens next. Religion and Gods give people a sense of relief and belonging. People tend to believe that there will be a great life after death, and that's comforting to them. People also need to feel that a higher power is there to protect them. When something goes wrong, they want to believe that someone will be there for them to help make it better. If a family member dies, it's comforting to think "they're with god now, living a new life, and we'll see them again soon." It's about comfort, security, and relief - some people need that in their lives. Some people need something to turn to when there's nothing left, and God/Religion gives that to them.