Nice generalization, but the issue is more complicated than you might think. Vengeance gives tanks attack power, which increases their damage done by all abilities. That's the obvious part. What you are missing is that it also increases self healing and absorption effects by huge amounts. Note how on tough damage fights, paladin tanks in particular top both damage AND healing meters. Vengeance can push our Sacred Shield absorption from 40k every few secs to 140k+. Our seal of insight can begin to heal for 50k+ every other hit, while battle healer heals raid members for amounts upwards of 20k. It might sound OP, but on very high damage fights like H Horridon, we NEED this to survive. It is not just about these supposed egotistical tanks wanting to do high DPS as you would like to think.
The total removal of vengeance at this time would be nothing short of catastrophic for the PvE scene. EVERY boss of the expansion would have to be retuned, otherwise it would be virtually impossible for the harder ones at least to be tanked. Challenge modes will be totally screwed too. Look at how tanks perform in PvP right now, where there is no vengeance. To detail, prot paladins at least in PvP right now are probably as viable as they were in vanilla (a.k.a. when the spec was useless and broken in every sense of the word).
All for what? To make DPS feel better about themselves due to their meter ranks? To be clear: vengeance really isn't harming anyone at all, unless you have a tank that stands in shit to increase vengeance (in which case, it is the fault of the tank). How does it truly affect you directly when you see tanks topping meters? Why should it bother you? I have a DPS toon too, and you know what I do when I see a tank beating me? Nothing, really. I don't care, and you shouldn't either. The fact that you are supportive of a decision that would truly break the PvE scene unless a huge effort in retuning is undertaken, for the sake of damage dealers feeling better about themselves, really sheds light on who is really being egotistical here.