Okay so if God exists, this makes any scientific experiment impossible to prove that it's true.
Not necessarily. Jesus said that not one jot or one tittle would fall out of the law, until everything was fulfilled. He also said that until the end, seed time and harvest, marrying and giving in marriage... in other words, life and physics... would go on.
While it might be true that nothing is proof in the presence of God, God has allowed many things to be proof until the time of the end.
I do believe in God but I do not think we'll ever be able to find out unless He comes down to Earth and shows us himself.
The clincher for the proof of God lies in the definition of God... not the things that He says about Himself in some holy book.
1. Cause and effect is a scientific law that is evident throughout nature, without anything ever being seen to refute it... other than the miracles of God.
2. Entropy is a scientific law that is constantly incompletely referenced by scientists. If it were spoken about in its entirety all the time, the fact that the universe is winding down, dispersing, diffusing, dissipating, would be part of the speaking.
3. What is entropy winding down, dispersing, diffusing, and dissipating? Complexity! Complexity is diminishing because or entropy. Yet, complexity is extremely great, even though it is less-so than it was in the past. You can ask any doctor or researcher for the one-word reason why they can fix all the diseases, or make people to live for a thousand years. They will tell you, COMPLEXITY. Nature is often way too complex for them to figure out the answers to it. But if they do figure them out, the complexity might not let them apply the answers.
Cause and effect is programming of the whole universe... that programmed intelligence into the universe (a form of high complexity)... that had a beginning (as shown by entropy not having completed its job). This fits our descriptions of God even more aptly than the descriptions, themselves.
We've been left here on the planet to think about it and take which decision we want. I prefer to believe rather than not do so, because if we do believe and we'll die and we find out He doesn't exist and it's finished then it's alright but.. What if we do not believe He exists and when we die we meet Him? What would we do?
This last part is reasonable thinking. But God is dynamic. And He wants us to be dynamic. So, He wants us to actively find out about Him so that we can live and grow, rather than simply outsmart Hell.