It is no "mere fact" about the sun and us being here. There are hundrads of other "facts" that work into to the mathmatics of probability.
Wow, lots of stuff to cover. The mathematics of probability are actually quite in the favor of things just coming together without the interference of a God. The universe, and the earth, and the sun took billions of years to come together. Together with the laws of physics this provides more than enough opportunity for things to come together.
All the facts actually run contrary to every major religious idea of how the universe was created. Scientists like Galileo were devoted Christians, they were not working from a preconceived idea - they facts just don't match up to anything writen in the bible.
The complexity of the eagle eye over the human eye and or any eyes on this earth all of them match just right so that each living creature's eyes are made just for them. And why is it that we don't see things upside down, our eyes are just like a camera lens and the image has been twisted around so we see rightside up.
This idea stems from a misunderstanding of evolution, and the difficulty of grasping the vast expanses of time which have shaped the human and eagle eyes. Evololution relys on many generations of eagles and humans with gradual changes to the eye and brain.
There are many mysteries of the brain like why our brain turns the image in the back of the eye right-side up, and why we control the left side of our bodies with the right side of our brain. Religion's idea of "God did it" is no more of an explaination than "i don't know how it happened". Just because you don't know why it happened, doesn't mean it is a mystical or magical thing.
Water has just the right surface tention so it can move up against gravity into tree trunks and the lakes do not freeze from the bottom up in winter because water expands when it freezes.
Again this argument comes from the wrong side. Obviously there are many things about water which is important to life. The idea that "water has just the right [properties]" for life could also be restated as "Life is dependant on the specific properties of water." In other words, water was not made that way FOR us or other life forms, life evolved BECAUSE water has the properties it has.
Also, we have not found any other life on another planet yet. It is entirely possible life on another planet may not be water based. The conditions on some other planet could be so differnt that amonia or some other liquid could the liquid of choice for life on that planet.
Again just because we don't know, doesn't mean it's proof of god or magic. I don't know how David Copperfield does a lot of his tricks, but I'm pretty sure it's not God.
It's like taking a pocket watch apart and putting all the metal wheals and screws and metal case into a box and then shaking the box till sometime in the future all the pieces have been put together so well that it would work -- but someone has to be there to wind the watch so that it runs and keep time.
Actually life is nothing like a pocket watch. It's more like if you had a watch whoes differet parts were allive and if aranging themselves into a pocket watch would be mutially benificial to all of them. Then you can see how easily - given time and opportunity - the different parts would "want" to come together.
They would naturally be attracted to each other because they would find that being a watch would help them stay alive and have little baby watch parts. You have to remember there is not just one human being - but billions. There have been countless billions of humans who have existed throughout the thousands of years we have existed as a species.
Comparing billions of things to one single pocket watch which has no mobility and does not have any genetic code which can mutate over time shows a complete lack of understanding of how life and evolution work.
Any way you look if you add up all the hundreds of marvels of what is on this earth the odds of all these thing happening together are so enormas that it is like having an infinity answer for it to just happen - there had to be something or some one that turn it on to start life. How it happened - I don't know --- I'm just glad it happened. The odds are way in my favor that someone's god fliped the switch.
Once more I will say that not knowing how a trick is done doesn't automatically mean it was god or a fairy. IF you could tell me HOW God did all these things, I would be more inclined to believe you, but you don't know either and "God" isn't telling.
Well science is telling. The hugeness of the sun can scarcly be understood when you think that it burns up 5 TONS of hydrogen EACH SECOND and has been doing so for over 4.5 BILLION YEARS! The amount of matter this implys is staggering. The amount of time in 4.5 billion years has no human scale.
It took over 3 billion years for life to appear on earth - a log time for the natural forces in nature to bring together molecules for life - just like the natural inclination of rocks to fall down a mountain towards the pull of gravity. Once life evolved there was an "explosion" in different species and many of the basic structors of life were arrived at soon after as a natural "best fit" for the environment it was created in. Over the millions of years since then small steps are taken through the years, steps so small it is impossible to see the progress durring a human lifetime or even durring the thousands of years of human history.
So no, the fact that the sun exists does not point to a god, but points rather to natural forces existing in the universe which have slowly sculpted and refined matter into the extremely complex and amazing creatures, like us, which exist on this planet. Sure, without knowing any of this it is understandable humans would think it was magic, or that some magical being like a fairy or titan or god made it this way.
Today with all we have learned about how the universe really was made and how is could have easily been made without the help of a mystical being, there is no reason to attribute any of the mysteries of the universe to a god because the only honest answer to why mysterious things are how they are is "I don't know." And neither do you.
The mysteries make us feel awe of the universe, but many times the explainations behind them are even more amazing. Religion is not giving humanity any more answers. For a time it was the best people could think of, but now with scientific instruments we can see beyond our limited senses and find real answers to our questions and real solutions. Maybe science won't find the answer to everything, but religion is not even trying!