Minecraft wiki entry for Dual_wielding, associated text: Dual wielding is a useful addition to the game with many applications. It is entirely optional for players whether or not they want to utilize dual wielding; players can completely ignore the off-hand slot and, with few exceptions aside, continue to play like it was before 1.9. Some players who use dual wielding may experience efficiency and relief, but others may just experience more setbacks. Some may only use dual wielding to its minimal extent. Ultimately it is up to each player and their own style of playing to employ this mechanic into their gameplay.