100% this. After 16 hours, I could have kissed the ground when I walked off that plane. At some point, after maybe 8-10 hours, order seems to break down a bit. People stop caring so much about keeping clean, the plane starts to get really cluttered and nasty, food ground into the carpet. I feel for the cleaning crews that have to spruce up the interior after a really long international flight.

I still remember the first time I flew home from the north, we had taken off from Dubai and were headed to Seattle, which goes over the north pole. I watched that silly map more than I should have (it just makes things slower, I'm sure...) and I was so elated the moment we went 'feet dry' over North America. And then I realized that we still had six plus hours to go, more than if we were starting at the east coast. I was so sad for a few minutes I could have cried.