Exactly!! Man IS trying to define an existence that is beyond his scope; hence, the field of science. Science attempts to explain the universe; religion (Christianity) generally claims to already have all the anwsers. Or, religion claims to personally know the Being that knows all the answers. It seems that as soon as science doesn't understand something or is unable to explain a phenomenon, the "Hand of God" is conjured up.
It's interesting that when someone someone doubts the existence of God or questions whether or not God is who Christians claim he is, Christians immediately state, whether overtly or not, that the person questioning is doomed to everlasting torment.
Makes you wonder why...