The worst part about flying is the part before and after the plane ride, when you get stressed about what time to show up, going through security, sitting around, waiting to board, landing and waiting for the doors to open, taking a bus to the terminal, waiting for a carousel for 5 ~ 60 minutes, etc.
If someone could solve that for me affordably, I can handle the sitting on an airplane in economy class for 15 hours bit.
Although yes: having high speed, low latency internet for those 15 hours would make it much more pleasant.