Sherlock Holmes' greatest problem wasn't that he was an occasional user of cocaine.
It wasn't that his insatiable, genius mind was constantly tormented by the comparable ignorance of everyone around him.
It wasn't that people thought him a psychopath when, in reality, he was a high functioning sociopath.
It wasn't that, no matter how many puzzles he solved, there were never, ever enough.
It wasn't that his elder brother, Mycroft, insisted on meddling in every aspect of his life.
It wasn't even that Jim Moriarty was his arch nemesis.
No, Sherlock Holmes' greatest problem was that he was utterly and completely in love with one Doctor John Watson.