The hallmarks of GenX (speaking as one) are both apathy, and isolation. Not only did we grow up as latchkey kids, but we also saw the deterioration and fragmentation of the neighborhoods we lived in.
By the time we became adults there was no unified voice; just individuals all scraping for their little piece of the big pie (as America devolved into a social Darwinist wet dream). By the time we became adults the general shift from people being citizens to being consumers was in high gear, as "politics" gained a slimier image and participation in it became more obviously futile.
I certainly grew the attitude that I would go to the wall for me and mine, but everything else could burn.