Why?
Blizzard can't control 5 man dungeon pugs. vote kick system doesn't work well (known problem according to few GM's), people ninja items, goes afk, cursing. but the worst is people without proper gear. Fresh example from this morning, i'm on my rogue trying to get him ready for alt run today, go in ZA, happy me. In the group is a warlock, spirit gear, agility, pvp with stamina, strength and dodge, no enchants no reforging. He wont live the party, we can't kick him, the party is disbanded and he gets to stay in the dungeon until other people come in and carry him.
This is not new, Blizzard know about it, doing nothing. Vote kick system is not working since 4.1 for me, GM knows about it. "Keep reporting, we're working on it" When i'll try to do my next dungeon, another person will come not geared, we will all have to carry him. Or, the tank will go afk for unlimited of time, vote kick? best case in two hours.
Why Blizzard think they can control 25 man pug group like this? they can't make the basic steps to confirm people got the right gear for their class or pve environment in 5 man group. I already told my guild (6/7 hc) that i might leave WoW, and if Blizzard keep implanting new features without fixing all these problem, then screw it, Star Trek Online is better.