Why does everyone blame the tank?

[MythToken]

If the tank dies, its the healers fault.
If the healer dies, its the tanks fault.
If the dps die, it is their own damn fault.

No this is how it works ^

Dps pulling aggro is their own fault, a good tank will get it back obviously, and a good healer will heal them. But it is still the fault of the DPS.
A tank dieing is the healers fault . This statement obviously assumes the tank is popping cooldowns, and it is the healers responsibility to keep him alive.
If a healer dies, it is always the tanks fault, they should never lose aggro to a healer.

The reason people blame the tank, is because no one understands these simple concepts. And if you look at some posts before this, everyone tries to tie back to the tank.

I love how DPS pulling aggro is the tanks fault, watch your bars dumb dumbs. Could the tank be better ? sure, but if hes not and you are starting to pull aggro as a DPS, you should slow down if you don't and die, that is def your fault.