The fact is, this game was built to make money and gems are the premium currency. For the developers to limit or disallow the use of them in any field would be taking money out of running and developing the game...so like it or not, the "wallet warriors" keep this game running. Go play Game of War, Mobile Strike, Clash of Clans...any of the big profit games and see who is on top....the ones that spend the most money, that is how these games are designed. With that said, they are also designed for a casual player that doesn't spend money to be successful to with more struggle of course and more patience. This game is about tactics and strategy and money mongers aren't always on top if they lack the proper skills and tactics against good tacticians.