I have experienced similar emotions and my viewpoints are from a different angle. I am not speaking for everybody of course but social needs are at the center of most human beings. I am not sure how much maybe my frustration is talking but at the moment I do feel that modern society life (I live in London) has a big impact on social relations. I am talking about being stuffed in a relatively small place with millions of people, leading a repetitive clockwork lifestyle, the usual work/commuting stress etc and feel this may be enough to cause social dissonance. There are obviously also intellectual dissonances, Individuality being among the highest goal a human can reach in our society, and yet how conscious are we of the fact that those baggy trousers and cool t-shirts with which we express our social nonconformity and individuality are actually what some evil masterminds in marketing and advertising offices planned to sell us as hip half a year ago.
Ok, enough ranting about society.