It wouldn't be easier just for computing. If I need to coordinate stuff with someone in a different time zone, it'd be much easier to be able to just say "Let's have a call at 4pm," instead of figuring out what his timezone is. I guess you'd still have to know if 4pm is a good time for him though. So he'd have to have some sort of indicator of what the waking/working hours are in his region... some sort of time zone. Nevermind, the more I think about it the more I realize that timezones are pretty reasonable.
