If it is obvious and logical that a computer has a creator, why is it not obvious that humans do?

Let us imagine that I put some oil, copper, sand, gold and a few other things in a box and shook it for a few billion years. At the end of that time, out popped my Gateway laptop. You would think that ridiculous! It is obvious that a machine as complex as a pc and as sophisticated as its operation would by its very nature require a superior intellect to construct, create it. The human being is far more complex and sophisticated (not to mention alive) so how can we belive that we came about mearly by chance and from inanimate material? (Let's not even go into the question of where the inanimate material came from). It is only logical to ume that a superior intellect constructed (created) us. I do not have enough blind faith to be an atheist.