I wouldn't say ZRH is the worst a/p in Europe, but it certainly appears on top of the list. But I agree with Few Cloudy, political considerations made the situation worse than it should be. Part of it was the way the swiss authorities mishandled absurd requests from the Germans to please a few hundred peasants. I think they had a strong case: a choice between low overflying of a 1 million people conurbation or overflying at a higher altitude a sparsely populated area. Anyway, the Germans prevailed and the situation is now even worse than it was.
Having said that, there one thing at least that I can't stand, it's the typical arrogance of the people from Zurich: how stupid can you be to name your airport "Unique"...