Although there's controversy, is anybody complaining that correct calls are being made?
If it's the difference between losing a World Cup Final to an offside goal in the 90th minute, and having that goal overturned and on to extra time, would it be okay then?

The problem people have is the time it takes to get the decisions out and the stoppage to the game.
This is really the first competition worldwide that has had the technology being used, there's going to be teething issues but if we can find a way to improve it, without detracting from the game itself, then I don't think people would be opposed to it.