I never professed to have all the answers.
Like blobru said...it is a tough question.
It gets tougher as you keep trying to pigeon-hole yourself into a belief.
When someone asks you "why?", it is at least polite to explain in your response why you choose not to answer such a question. Just a pointer.
If you don't like it, by all means, go away.
I'll go where I like, thanks.
Anyways, I feel like I should make an argument here. You talk about our "perfect planet" so often, I have to ask you a question:
Would we even be able to marvel at a planet if we didn't exist on it?
Think about it for a second. If there's a billion in one chance of having a world that can support life, then life will evolve on one world out of a billion.
Think about it some more. To the life that evolves on that world, they will adapt to the planet to perfection. Of course sunlight and water will be great to those that live on the world with sunlight and water. We've adapted perfectly to our surroundings thanks to evolution, and yet we're limited to what's available on this planet. There are spectrum of light we cannot see, frequencies of sound that we cannot hear, and all for a very specific reason: Evolution selected for it. There is nothing supernatural about any of it.
Think about it yet further. To the perspective any life that evolved on any world, the elements are "perfect" for life in their surrounding area. But what was so incredibly special?
Absolutely nothing. Just statistics. A one in a billion chance is an incredibly vast number, and a one in a bajillion is even larger. But if you have a large enough data set, that number is not so incredible, and the probability of at least one instance become closer and closer to 1. From the perspective of that one, it's incredible, but statistically speaking, it's nothing at all.
You want to fudge the numbers and add in your god-being. That's fine. But I find inventing mythical concepts to be rather silly.