eutab that's a very good point but is it possible that atheists give up because they cannot find any proof and then they turn to the unknown and get a little scared. What if something is really there and they will judge me after I die? Could that be the reason why many atheist later on admit confusion or admit the existence of the unknown force?

Even if there is some such as god that created the possibility of life and the materials associated with it, we do not have any kind of evidence of anything else after the first creation if that was so. So even then there doesn't seem to be a point in blindly following any God. Maybe we can reserve a special place there for whoever created this thing if it was ever created, and then simply move on to be a better human being?