Sleeping, Just a guess but could it be a combination of connecting pax and better use of aircraft. I suppose it depends on between which continents you are referring to. I work Eur/US long haul so can comment only on that. Our flights leave midday to fly to the US, sit for a few hours then fly back overnight to Europe.They sit a few hours there, then back to the states. No long extended sits except when they are pulled out of service for their heavy maintenance checks. We do have one flight that operates as you say you like to travel, leaving in the early AM and arriving that same day. The reason there is only one flight like that is because it is expensive to overnight the jet at Heathrow and no connecting pax can fly on this flight. Many of your travelers on any given flight are connecting onward so this may necessitate the overnight flights. I wholeheartedly agree that we are not at our peak on overnight flights. There is no way around this and I suppose all crew would laugh at the suggestion that the company build our timetable for what is best for the crew.