Surrounded by Cuckoos, but I was the crazy one

Cuckoo....? What exactly do people consider cuckoo nowadays? There are so many types of people in the world and everyone has a different opinion on exactly what normal is. So who exactly decides what types of people are cuckoo? In the movie 12 Monkeys, a psychiatrists admits that it is the art of psychology that decides what is right and what is wrong and who is cuckoo and who is normal. So, is it really up to psychology to decide who is normal or not? This may be so. In my opinion, culture has a  lot to do with what people consider cuckoo or normal. Characteristics that are considered the norm in some cultures may seem absolutely absurd to other cultures. There are so many different people in this world that the idea of being normal sounds a little absurd to me. With such a diverse world that contains massive amounts of types of behavior, it is hard to narrow it down to how people should act because well, everyone is different in their own way. There is of course a fine line between being yourself and being absolutely crazy but I guess we have to decide who's on what side of the line by using our judgement and the outlines that society has provided us with.