Large events like this are what makes life worthwhile if you are one of the people enjoying the event. They can have the opposite effect for everyone else if they are not managed properly.
But the point is it's just part and parcel of life. Other peoples enjoyment will sometimes impinge upon yours.
Air shows make a bloody big noise so should it just be gliders? Fireworks shows similarily.
If it was a regular problem then I could understand it but 3 days a year?
However the way the country is going there is no chance this is going to change. So the only thing will be to move the festivals to the country.
That being said Glasto is in the sticks and they've got the same problem. It's particuarly laughable because of the residents of Pilton (the nearest village) only 3 residents were living there prior to the start of the festival. What a nimby crock of shit.