Yes, sometimes referees make enormous, world shaking mistakes, but the problem with European football, as opposed to American football, is that the game is pretty slow anyway, so, for example, stopping to look at footage every time someone calls a foul, would add yet more time to overtime and injury time. This messes about with costs and profits, which the sponsors don't want, if anything, they want a way to have more goals in a football game, and make them shorter. This is why 5-a-side is gaining in poplularity.
Personally, I'm bored with football, it's all Prima-donnas whining about the fact that the 300,000 cheque they recieved this month isn't enough for someone as good as them etc. Personally I think, as cricket and rugby start to gain interest (possibly because the people who play it are more 'human' seeming than footballers) I can see Football dropping into a big hole for a while, and it will deserve it.