Minecraft wiki entry for Things_not_to_do, associated text: Lastly, if the player has an efficient mob grinder or villager trading hall with appropriate farms, there is no need to worry about efficiency of using experience points because the player gains plenty of experience points and can enchant all of the tools and armor needed, with enough patience. If the player uses these items well, their in-game activities become easier and efficient, so the player should make sure to make the most out of experience points.