Earlier quoted context omitted.
There is no reason to believe in a god, and no evidence to support it. I'd like to know why people do believe in a god, as not believing in one is fairly easy. So, a question to your question, is there a good reason you believe in it (assuming you do)? Edit: petervandijck said it better above me.
I personally cannot imagine a creation made by pure hazard to be this beautiful. I know that beauty is subjective. But i find that nature is so wonderfully created that -- for me -- it's hard to believe that there is no artist behind it. Like, when i see a nice piece of code, i know that there is a really good programmer behind it. :-)
Why explain that beauty away by adding a god-figure in there? Isn't the universe even more beautiful and majestic without a (fairly silly) "outside creator" explanation?
Your explanation also logically doesn't make sense. You say: I can't believe there is nothing behind it. But then what is behind God? Who created him? You can believe that? It's logically inconsistent, and makes me think that perhaps you haven't thought this through very well.
There's a similar argument around consciousness. The naive interpretation of consciousness is always: "there's a little man inside my head doing the thinking", a little "me", something that represents the self. But then, who is the little man inside the head of the little man? Same flawed logic. The latest thinking/science now says that consciousness just "arises" from processes in our brain. And the "me" is mostly an illusion. Which is, funnily, quite close to the Buddhist interpretation of the self.