God........who need him ?

Why would an omnipotent, omniscient being create faulty humans and them blame them for their mistakes. I mean, the general response I get is that he gave us freewill to make our own decisions but if he is all knowing then our actions are irelevant because everything is foreseen by God. So if there is a God then he sure is a sociopathic, power crazy nazi ;) Sorry for the buzzkill but my brain can't fathom the idea of God through blind faith, especially with organised religions that try and ign properties of a finite being (humans) to something that is inherently infinite. I'd like to hear what people think.