You don't need to accept them, you can just know them. This way you can be sure that knowledge don't disappear.
What knowledge are you speaking of in regards to something not demonstrated to exist?
It doesn't need to be unnatural cause. I use god to explain what is beyond observation. I am not denying facts or science.
This is called the god of the gaps. In essence this is an argument from ignorance fallacy. Claiming we don't know therefore X. In this case X is god. This is not a very sound argument for god to make either as it has the effect of reducing one's god over time as new information is gained. Or it leaves a person at odds with the new piece of knowledge.
They don't need to. The only one who have the burden to prove/disprove something, is the one who try to convince other people.
Umm, no. It's the one making the positive claim. For instance some one tells you they know a guy who can sell you the Brooklyn Bridge. You tell them that you don't believe this person can unless they can show proof that this person can sell you the Brooklyn Bridge. It would be up to the person claiming they guy can sell you the Brooklyn Bridge to show proof and not up to you to disprove the claim.
exactly, which means there is no need for a debate or a discussion in that subject. As I said before, no evidence will occur from any side. People who believe in god, can believe in god and those who don't, don't need to. And problem solved.
False claims which go against the observed evidence are regularly made based on such beliefs.
Now the question is, what is god? If we describe god as the creator of everything, then couldn't god be the beginning of everything? I mean that scientifically.
What if it turns out that it was nothing more than quantum fluctuations, could that really be called god? A very basic definition of god is a being with supreme control over some aspect of reality. So calling god the universe or that "quantum fluctuation" would be doing nothing more than taking something already defined and giving it the god label.
What will happen, when science reach the point, where it no longer can explain something/observe it.
Then it's treated as an unknown and we continue to search of what we can observe in order to form explanations and improve our knowledge.
Another thing that is good to take in consideration is, what decide the way natural things works? I mean, why is the physical law the way it is, what decide that?
This is like asking what decides a round peg fits into a round hole.
A law is simply a statement of fact describing in concise terms an action or set of actions that always apply under the same conditions.