I think we ought to be careful about the calls to bin it. If we did, the referees just get the excuse that it was missed, speed of play etc for their "mistakes", and it is just sweet under the rug.
We are all angry at var, not because it is getting things wrong, but because there is less excuse to get it wrong now and they still do...it has basically exposed all the biases and inconsistencies, intentional or not. We see it now and it infuriates us. They've also applied it moronically, which doesn't help.