I liked windows on polar route flights for the possibility of seeing aurora. On one flight to Germany, there was a very good aurora display. I let 3 nearby people know about it. One young German woman got up to look out a door window, and thanked me. One middle aged German woman fulfilled stereotype and was annoyed. One elderly man reading from a Qur'an got up, looked out the door window for a long time, and thanked me profusely, with praise to this wonder bestowed by Allah.
Then there was the time on a flight to Asia, where I noticed liquid streaming from an access port on the wing, and quietly notified crew. Our refueling stop in Incheon after this, ended up taking a couple of hours.
After a number of decimal places, nobody gives a damn.