Just because science cannot explain something yet, it does not mean that it may not have a chance to be explained in the future.
Anyway, your question is a bit nonsensical. Natural is what fits with current scientific theories regarding laws of nature. Making supernatural claims means believing in things which have no basis in what science has discovered about laws of nature. There is a big difference about being futurist and believer of supernatural. Futurism is about creating ideas and hypothesis about future, which are based on conclusions arriving from scientific understandings regarding the reality. Supernatural is about creating ideas about reality which have no support in scientific understandigns and do not fit to scientific theories. Science deals with probablilities and evidence. Concept of god does not fit with any scientific theory and believers of god are incapable of satisfying burden of proof. Concept/belief of god is as as valid and probable as concept/belief of pink, flying unicorn eating unborn babies during Equinox. Just, becasue some concept is generated in someone's head, does not mean that it must have reflection in natural world.
Please watch the video about open-mindedness.
And check up these if you can. They aren't very long:

"Scientific Method Made Easy"
http://www.dailymotion.com/video/xhb0ej_the-scientific-method-made-easy_tech

"Scientific Literacy"

"Can We Trust Scientists"

"Why Don't Scientists Fear Hell?"