I find it ridiculous that airports in the US close. I've landed earlier than expected and you need to stare at the ceiling until 5am while other aeroplanes arrive and prepare for a race through customs.
P.S. It's not just America. I flew through the Middle East once on my way to eastern Asia. The flight landed at something like 3:30 AM local time, and the security checkpoint didn't open until 4 AM or 5 AM or something like that. There were so many people waiting in line for that checkpoint, it was getting dangerously overcrowded in that hallway, with more and more people arriving down the escalator all the time. Thankfully nobody fainted or fell, but it could have been a bad situation there.
That one, sure, but I'm referring to a few major hubs where 10-15 aeroplanes arrive before or within the first 15 minutes after they open