I didn't use the word "proved", mikeyp, but that is just a quibble, I suppose.
Ethmer's assumption - that God exists - is not just "not 100% proved" but not even 0.000000000...000% proved, and you can add as many zeros as you like. In fact, far from being proved, there is not even a microscopic grain of evidence for it. Which means that your evolution analogy doesn't work.
The first stage of evolution was based on a superb theory backed by a lot of in-the-field evidence. Since when, in only 150 years, it has developed into a full science backed by mountains of evidence from all quarters.
God, on the other hand, has not moved from his original position about 3000 years ago when he was promoted from a minor god of southern Israel to the monotheistic "God".
Anyway, I look forward an answer to Ethmer's question from someone who is prepared to accept his/her original assumption.