The absolute worst part of traveling to me is the boarding and deplaning process. It could be done so much more efficiently and quickly.
We flew home from Denver after a delay. On the descent, there was an announcement saying that there are people on the flight who have connections and that if Chicago is your destination, please remain seated so those passengers could get off the plane. I saw so many people shaking their head basically saying FECK YOU! Of course there is no way to tell who is who but I saw many people get in their way for no reason other than they were pissed at the airline for being late in the first place. Ah, good times.