Some argue that playing a rogue deck requires more skill than playing a deck that has already proved itself (or what we like to call "archetypes/metagame decks" )
In fact, this is partially true. However, if a deck proves to be good enough, people will start to copy, modify and improve it. In this case, the rogue deck will grow out to be an archetype deck. For example: if Banette didn't have the huge trouble with healing/tank decks like Magmortar, it might have been one of the leaders of the format like G&G and Mortar are now. But yeah, some Pokes just don't fit the format they landed it, which results in them being called rogues. This is something all decks went through. Among all decks, some become popular and some become not.
Then again, I'll always be a rogue player. I don't care how many times certain ideas have proved to fail, I still like to try them myself and check out how they work.