Christian Fatalism

"Whatever is--it was already determined,
   what will be--it has already been decided.
As for man, he cannot argue
   against what is more powerful than him.
Increasing words only multiplies futility,
   how does that profit anyone?

For who knows what is good for a man in his life during the few days of his fleeting life, which are fleeting as a shadow?  For who can tell anyone what will happen in the future under the sun?"  (Ecc 6)

Christian fatalism summed up in a few verses.  If God is God then nothing we do matters.  Predestination means we had no real choice in the matter (thank God!!).  God is all knowing, all seeing and all powerful, what does he need us to pray and ask for things?  He already knows.  He's going to do what he wants anyway, right? 

You know, before i go and tell you what i think about this, i'd be curious to hear what y'all think.  What's wrong with thinking this way?  Are there fallacies we are holding on to?  What scriptures refute this way of thinking?  What does thinking this way do to our heart?  Our faith?  Our testimony?