I started flying TCONs for family visits (maybe 2x/year) in 1976, and for work (probably at an average rate of 6x/year) in 1982

early on, a redeye was certainly the best from an efficiency standpoint of not "losing" daytime hours in transit, particularly as I didn't have difficulty either with sleeping on the jets or powering through the arrival day ... by the time laptops came along, and time in transit began to merge into productive work time, I just wasn't going to change my routine too much

as of a month ago I've logged over 2200 commercial flights, of which 127 have been redeyes; on more than a few occasions in the past couple years, when I've been disembarking at sunrise at ATL/DTW/JFK/IAD/BWI/DCA, I've muttered to myself that I'm getting too old for this nonsense ... but two or four or six weeks later I'm doing it again

like davetravels, I make a lot of redeye bookings on the basis of cost, but I'll also be the first to admit that I make extensive use of Delta's liberal FC SDC policy to turn those $375-475 SEA-MSP-BWI trips (150% of 2300 miles) into SEA-LAX-JFK-BWI (150% of 3975 miles)