Let's be honest, if you want the quiet life then you don't live in one of the most vibrant cities on earth, you leave the bright lights, bars, clubs, theatres and high rises and move down to the coast or at least to somewhere that's a lot greener and quieter!
We all make decisions in life, and I'm sure the people that live in London are quite happy to have the employment prospects that come with having some of the world's largest companies in your city. Trouble is, those companies want connectivity to the world, and without LHR they don't have that.
London is a wonderful city, but peaceful and quiet it is not!