Story time:
I leveled a paladin to 85 during cata as ret. I then decided I wanted to take advantage of the Call to Arms bonuses and switched her to prot to start tanking. I ran many dungeons and never had a problem.
Fast forward to Mists, I made a monk and decided I wanted to level it as a tank. So I specced Brewmaster at 10 and began running dungeons at 15. I leveled that monk to 38 exclusively through dungeons and noticed a very irritating trend. In about 80-90% of the dungeons I have tanked, I would have one or more DPS in the group who would run ahead and pull groups before I could.
Let me say a couple things here. Firstly, I've played a DPS main for 6 years now. I've made my share of mistakes and I always try to remember to apologize when I screw up. Secondly, I don't think I'm a slow tank. I do usually wait to pull a pack until the previous one is dead, but I also don't stop unless someone dies or the healer needs mana.
Anyway, when faced with these DPS players, I would ask them politely to let me be the one to pull as it is my job as the tank and its a lot easier for me and for the healer when I'm the one who pulls groups. Occasionally (maybe once or twice) the group would listen and stop running ahead. However, the majority of the time, they would either ignore me completely, or actively throw it back in my face with something along the lines of "omg quit whining". So, eventually, I adopted a policy, and I usually try to mention it at the start of a dungeon, that if DPS are intentionally pulling groups before me, I won't tank that group.
When I recently decided to server transfer, I didn't want to bother transferring a level 38 monk so I started a new one. Specced tank, queued for a dungeon at 15, and was immediately faced with a dps warrior who pulled groups and insulted me when I asked him to stop.
I realize that its just low level dungeons and not really a big deal, but I have grown so tired of questing over the past 8 years playing this game, that I prefer to level through dungeons, but I really get turned off of tanking by this behavior (even though I love monk tanking).
My question is, am I a jerk for refusing to tank groups when a DPS player intentionally pulls them before I can? Do I need to just suck it up and either learn to live with it, or respec dps or something?