Who's Afraid of Virginia Woolf?
How we cite our quotes:
Martha: George who is good to me, and whom I revile […] who has made the hideous, the hurting, the insulting mistake of loving me and must be punished for it. (3.45)
This seems to be the root of it. Martha admits here that she loathes herself. In her twisted logic the very fact that George loves her seems to be the ultimate source of her dissatisfaction.
Honey: Why would anybody want to wash somebody who's sixteen years old?
Nick (Slamming his drink down) Oh, for Christ's sake, Honey! (3.290-3.291)
Honey's absurd level of naiveté seems to be one of Nick's main sources of dissatisfaction with her.
Martha: A son […] who spends his summers away…ON ANY PRETEXT…because he can't stand the shadow of a man flickering around the edges of a house…
George: […] who spends his summers away because there isn't room for him in a house full of empty bottles, lies, strange men, and a harridan who…(3.395-3.396)
It's interesting how George and Martha imbue their imaginary son with their own deep-seated gripes.