Argument nr 2:

"Tanks are the most abused class in any MMO. Everything gets blamed on the tank. And if you did not spend an hour studying the encounter prior to queuing prepare to get booted from the group or verbally abused for the next 30 minutes or so. The MMO community caused this problem." - so it's not a badly designed job or unfun job/class but the expectations that are made by the community for the community. While I don't have any ideas how to resolve the problem of studying for the test and hope to pass it, in terms of raiding, dungeons and etc. I don't think that not encouraging tanking by adding more tanking jobs is a right solution either.