Every now and then I dust off the ol Paladin tank and take him for a spin around some heroics. My main goal is to get the instance over with asap. So I que up and instantly I am greeted with an enter instance button. Not like the 1 minute wait of the healer class or the 15 minute wait of the DPS que. Soon as I enter the instance and buff everyone I start chain pulling as long as the healer has mana. Sometimes I do get the "Hay let's go kill the extra bosses down there" comment. I usually reply with "Do that with your guild" or "I don't have time for that" or my favorite "We will after the last boss". Knowing full well I am jetting after the last boss. As the tank your job is to lead you group to victory. So slowing down to take out un-needed bosses is wasted time.
Hay if you don't like it have fun in the 15 minute que. :)