Sigmund freud??

Ok so lately we have been talking about the "famous" sigmund freud in class. personally I dont buy much of anything he has to say about psychology. I think that overall he was more of a crazzy sex addict then he was a psychologist. Sigmund thinks that all human life revolves around sexual desires that revolve around human beings!? that is probably one of the crazziest statements that i have ever heard in my entire life. Today most of freuds ideas have been rejected except for his defense mechanisms, so i dont really see why we talked about him in class. I mean ya the guy did have his own "interresting" theories but for the most part they werent excepted into society at all. Below i have posted some picture of the crazzy guy just so everyone could see what he really looks like.