The human body is a miracle machine that needs 8 hours of maintenance and repair, in the form of sleep, every day.
Now, if you were an inventor and invented a machine that did some marvelous thing, and then you found out that the machine needs to be shut down for 8 hours every day to be fixed, would you buy it? Would you call that inventor a genius?
Would you call that inventor a God?
Would you even bother to invent something like that?
And yet God made the human body.
And I'm going to church every Sunday to tell Him what a great inventor He is?
As if.