What would it be like for London, for Sherlock's friends, for the British Government, for the criminal underworld, and for Jim and Sherlock themselves if the two joined forces (either Jim joining Sherlock as a consulting detective, of Sherlock joining Jim as a criminal mastermind)?
Now even as a hypothetical question I would refuse to agree that this would ever happen.Jim Moriarty is pure evil. Nothing he does has a moral compass or any meaning but to cause harm and destruction and chaos in the world. He is an unpredictable force that is ruining many lives just for the sake of it. Sherlock on the other hand, even if he is refusing to admit it, is fighting for the good. Deep down he has the urge to help and to serve people, even though he first and foremost agrees to solve crimes only because he is bored.Now these two completely different forces joining each other is utter nonsense. One side is causing evil and the other one is fighting it. They have to coexist so that the other one can function. They have to be playing these opposite roles or they will drown in ordinary lives and matters of daily struggles that are too simple for such great minds.So I can assure you, that these two couldn't join forces.


















