Culex, its called cognitive dissonance...there actually is an official name for the psychological phenomenon we see here. People get all hot and gooey over their hardware, that they shelled out buku dineros for, and can not reconcile the fact that it may not be all that. Otherwise they would have to consider upgrading and obviously can't afford to do that.
Let's say, for instance, that you meet this woman and fall in love with her, and then find out that she supports the wholesale slaughter of baby seals and sells their pelts for a living (assuming that you don't find that to be a good quality). You would either have to stop liking this woman (analogous to the nvidiots ditching their GF2 and buying a radeon), or change your opinion about baby seals (analogous to them denying the poor image quality issue). Its just easier to do the latter as, in my example, you still get laid, and in the video card scenario, you dont have to shell out for a new card. Makes sense, eh?