As i have said, I am doing a degree in physics and biochemistry, so rationality is just what i do. thinking rationally, it makes sense that an all controlling god should betold of to people so that those who convey the message of god are ultimately in control. If they choose to say that god gives them absolute decision on what happens, then they cangrow to blieve in their superiority over god. They convey messages to the masses, it is gods will, they say. Over time (what, 5000 years at least) this becomes diluted somewhat, and even those in control forget that this was ultimately the aim of introducing a religion.
HOWEVER I also realise that some pretty weird stuff happens for there to be no god. Not just in our lives, but in science aswell. There is a fundamental rule that you cannot possibly measure anything to a high degree of accuracy without altering the system, which creates an large uncertainty in another measurable value. On its own this is common sense, even if you use light to find the speed of something, the speed will change slightly, though it is only affected dramatically if a high level of accuracy is measured. However this allows energy to be 'borrowed' for a certain amount of time as long as it is 'paid back' after a certain time. We can not do this, but somehow nature can. It is the reason that radioactivity occurs. Where does this energy come from, if it wasnt there before? We do not know. This is just one of the many odd things about quantum physics, which shows that there are some things that we just cant know.