So you're saying the confusion of someone visiting a different timezone and not knowing what hour of the clock the sun goes down or comes up is worth avoiding, but the confusion of anyone that has to deal with timezones in any way, such as tv programs, emailing your office overseas, calling your grandma in Ireland, waiting for the release of your new game, wondering what time your aeroplane gets in, etc etc etc is not worth avoiding?
It's not like the sun rises and sets at a consistent time anyway. Not that people have lunch at a certain hour.
A while ago we made a completely arbitrary 'setpoint', and then we've gone and put relatively arbitrary offsets on top of that, and have an arbitrary subset of those offsets change at relatively arbitrary times of the year. It's insane.