You play any online game and people will work for the gear and materials they want.. Farming is working.. Working is killing things to obtain loot.. To loot things of the same type over and over from the same group of mobs is to farm.. And this happens no matter where you go. If that's how they want to enjoy their game, who are you to judge? But by sitting Infront of what they are doing, preventing them from obtaining their goal, you are in actual fact more worse yourself than what you make them out to be!