I never liked the idea and still don't. Football is a human game. It's not meant to be some perfect, mechanical utopia where every match is played in identical, flawless conditions and every decision is undebatable because the ref is a time-travelling robot.
At school we were taught that what the ref says goes. The rules are the ref's guidelines, but they are not the actual seat of authority: he (or she) is. The ref cannot be 'wrong', because the ref is the one who decides what's right.
Now of course at a professional level you can't maintain that, because sometimes the cameras will capture a situation where, either by poor judgement or failure to see something, the referee and the rules end up at clear odds. I like goal-line technology because it's black and white and only outranks the ref's judgement in black and white situations. The ball either did or didn't cross the line. Every other refereeing technology, including VAR, potentially goes further, and undermines the referee's judgement in situations that are, to a greater or lesser extent, subjective. And for me, that's too far: part of football is that for 90 minutes, everyone involved consents to let the referee be the sole authority over 'subjective' situations. His is the only opinion that counts.
Of course I bitch and moan about bad decisions as much as the next man. But that's part of the game! Don't sanitise it away! As the captain of my uni side used to say, charming bloke that he was, there's no such thing as a good f**k without a bit of friction.
When you want your team to score though and the video ref gets called into action, holy shit that's gotta be annoying.