The answer is simple: Queue times and that Lion mount.

They did the right thing with healers: Level a healer to a certain level - get a unicorn. But not so with Tanks. Healer mount is gay and stupid, but they make a badass mount for tanks then say "you can have this badass looking mount if you complete 200 runs of high level content".

I understand SE supposedly wanting to encourage classes they felt didn't have enough people, but news flash SE, don;t do this. tanks and healers were MEANT to have less players than DPS. We're SUPPOSED to be classes that are played only by people who WANT to play them.

Here is the big issue: I am seeing a VERY ever increasing number of healers and tanks that just suck. I finally started asking some (without telling them that they suck, of course, because I did not want to spark an argument) what led them to play the class they are playing. Guess what? MOST of the time they reply bluntly that they created the class so they could do dungeons without queue times. Some even tell me how much they HATE playing the class, but they hate queue times even more, so to hell with the party, they want their loot!

That is a huge deal, in my eyes. I heal in every MMO I play. I enjoy it. I love learning every aspect of keeping my party alive in every game I play. I play a healer because I enjoy it. I, too, REALLY want that lion mount, but I can tell you without even trying that I would suck as a tank, and so I am not going to try. I refuse to make a party suffer and ruin the fun they are paying $14.99/Month for because I want some mount that we should be able to earn WITHOUT making other people suffer for it. Healers - they don;t have to make others suffer for their gay unicorn mount, but they DO make others suffer for queue times.

So what is the result of this behavior? Now as a healer I have been noting LONG queue times. So have tanks, apparently (a tank in my FC last night was saying he was in queue for 80+ minutes as a tank. Wow!) Why? Because loads of people are queuing up as healers just trying to cut queue times. And they are robbing a party of a good healer like myself who actually WANTS to heal that party. So the final result is: You actually are not saving queue time any more, and you are making other people suffer, and you will probably get kicked a lot (except from raids, which no one cares because the other healer is carrying you so well that no one notices you suck. I solo heal WoD all the time because of Clerics "stuck" in that damned Cleric stance.

So - to the OP - if your tank sucks, or if your healer sucks, then they don't give a shit about their job and they are just there to shave queue times or get that lion mount.