They do, actually. Since when farming (ore, herbs, battle pets) you merge onto another server, the competition for those node increases, making farming more time consuming and less fun since there is basically triple to quadruple the number of people farming the same stuff you are. Now if I could just be left alone to farm on my own server without other people bothering me I could get the tedious farming over and done with and then go back to doing other stuff.
inb4 "but dis is mmo, ther r supos 2 be lotsa ppl lawl"
We shouldn't be forced into MMO in every single aspect of the game because WoW has never been THIS immersed with multitudes of people in every area.. When I am out soloing (farming, questing, taking screenshots of my assend against a sunset) I WANT TO BE SOLO.