Why Addiction is required ?

That Sounds like a dumb Tittle, doesn't it? It is true in some cases. Some say addiction in Study can make human smarter whereas Addiction in a thing like drugs, drinks can make them go bad. It is a common thinking (at least that's what I thought). But by mixing with people and I mean different types of people, this thinking had chnaged a little bit. One saying remains True 'Whatever You do,...