Let's suppose that God IS real.
The ONLY thing that would prove is that he's more powerful and wiser than humans, that's it. Everything else is speculation.
It doesn't answer the myriads of questions that follow... why are we here? why do we die? where do we go after death? why doesn't god end human suffering if he has the power? why do many other organism live hundreds of years more than humans if he really loves us? and on and on and on.
Christians will point to the bible to prove that he exists, although mankind continues to misinterpret, misrepresent and dominate man to their injury all because humans pretend they know what it says and how to interpret it. They don't and thus Religion is one of the biggest causes of wars, deaths, families being torn apart and so forth... again as we're supposing that god is real... it wouldn't be his fault but mankind trying to interpret a manmade book. (I lived through one of these so called religions thinking they knew it all).
I know what Christians will say, it produces many good qualities in many people. Yes, religion does without a doubt. My entire family considers themselves Christians and we've had countless discussions but again it all boils down to Faith. We have no proof, just faith. And no, life in itself and the stars and the moon the Universe DOESN"T in itself prove anything. I'll discuss this on the juxtaposition if god Doesn't exist in just a bit.
Religion does do one thing, it makes Christians reliant on a being that promises the things told in the Bible, so that gives piece of mind. The bible tells it's followers to go preach and teach others about God, Jesus, Apostles and so forth. This puts them in a tough position, "let me preach to you what you need to be doing or about the love of god (since you don't believe as I do)" Instant antagonism, "my belief is better than your belief because what my religion teaches is true"
My question to my sister is always, what makes you better than me? I mean really? what makes anyone who professes to be Christian better than someone who just doesn't believe? Both sin, both have good things happen in their lives, both have bad things happen, both die. Absolutely no difference. Let's put it this way as I tell my wife (who's a member of a cult) lets get a whiteboard and put my name on one side and christians on the other and count the differences, there's NONE, I sin, they sin, I die, they die, I have good things happen, they have good things happen. They simply attribute the good to God and I'm not sure what the would attribute the bad things that happen to them to, Satan maybe. They're quick to attribute the bad things in non-believers lives to the fact that they're not following Gods Word, BUT THEY DONT EITHER, if they did to a T they would be considered perfect.
Now let's suppose God DOESN"T exist. Then how life began is an even bigger mystery. FOR ME, life is way too complex to think that it just happened, the Big Bang theory, although I suppose it may have happened that way. OR maybe Smarter Beings created us. After all, the Universe is Gigantic and if there is indeed some being or beings that created us, they would have to be smarter and more advanced than us, they could be living out there somewhere. I know, I know, that has millions of other questions that again, can't be answered. But that's a possibility. One that can't be refuted, because we simply don't know.
I want to believe in the God of the Bible and I think I do believe more than not. Christians will think me blasphemous for thinking this way but IF God really exists and he indeed is loving and he indeed made me in his image, then he knows my mind, he knows my doubts, he knows I don't hate him, he knows my questions, he knows that i'm a good father, husband, brother and son. Not perfect, but again, no different than any other professing Christian. No I don't preach to others about God so as not to push my beliefs or non beliefs on anyone, because as I stated... I don't know. And quite frankly, neither does anyone else on this earth.
I think it amusing when someone posts to Facebook or elsewhere " 7 reasons (or however many reasons) that destroy the myth that god exists " or vice versa, that prove he exists. Simply put, no one knows