And that's a big problem for lots of people - I plan on the few days of a long trip to get accustomed to the local time and feel comfortable and well rested. B

And that's a big problem for lots of people - I plan on the few days of a long trip to get accustomed to the local time and feel comfortable and well rested. But just because I'm willing to put up with it when I travel doesn't mean that I want to put up with it twice a year for no apparent benefit. If I had the option to not have to deal with time zone changes when I travel across the country (or world), I'd vote for that solution. Even if ballistic air travel means I can fly from LA to Tokyo in an hour, the 17 hour (well, 7 hour) time difference means it'll never be a seamless trip even if I can do it in an afternoon. I'm told that if you have the time, taking a cross-atlantic trip to Europe is great because there's no jet lag, you slowly adjust to the time over the course of the travel.