Read other letters about this article
I don't think folks can judge JFK unless you do it on an terminal by terminal basis--the new Terminal 9 is nice, although it takes FOREVER to get to the far gates (I think that is the legacy of leaving the old terminals 8 and 9 open while building the new one.
RDU is one of the most depressing airports (although I haven't been there since '04 or '05. Just comparing it to when it was an AA hub to now is pretty sad. Now it seems like a half-boarded up DFW.
Biggest improvement, in my opinion, is the new DFW train being INSIDE security. Why can't they have that at more airports? DFW's older terminals' security is annoying, however. I always think that I'm in the longest line in the terminal, but there is no way of knowing if you don't walk to the next one.
The worst thing about DTW, at least when I flew out of there regularly for a while in 2000, was that none of the restaurants stayed open late--this is Northworst we're talking about--none of the flights left within hours of when they were supposed to on a Thursday evening. Having the only food option a Burger King that took advantage of the situation by serving whoppers only to trapped travellers didn't make the experience any better (oh, there was also guessing which flight to LGA would be the one that went since they'd usually cancel all but one).
LGA is kind of dingy in the main terminal, but convenient. It'd be more convenient if you didn't have to go through security again between concourse C and D of the main terminal. The US Airways terminal is also kind of depressing since it seems like it was designed to be more than a hub for regional jets like it is now.