End a discussion so people will continue to use the system they currently like? Why should we not discuss something in order to prevent people from being convinced of other things?
Just because something feels nice to believe, it doesn't make it any more true.
Nobody is being forced to discuss anything or click this thread. Those who don't want to discuss it can simply do other things.
I'm not trying to stop people from using whatever system they prefer themselves in personal cases, but I think the most rational systems we can invent should be the official ones on the entire planet. The difference is that if a small family somewhere likes to refer to time based on their outdated time zone and time system, they can, but in the public sphere, the most rational systems will be used and encouraged, and hopefully replace the outdated ones over time.
The reason why I think we should transition to more rational systems is because we will benefit in the future. It will make calculations a lot easier. To convert a number from meter to kilometer is much easier than converting a number from furlong to mile, in a base 10 number system, which we use today, and defining power as energy pr. time unit, and simultaneously choose the unit 1 watt to be 1 joule pr. 1 second, makes things a lot easier than not thinking other units into the system, like horse-powers and calories.
I agree with Atomic that a worldwide, single time zone without shifting would be best, but I think we should change our time measuring to a base-10 system (if those people who should research into the efficiency of units in an ideal society would come to the conclusion that base-10 is actually the best number system for us to use).
Then again, it's hard to predict the future, but if we colonize other planets, a time based on Earthly days could quickly become irrelevant if most people lived elsewhere. Ofc the benefit might not be as great if we have to fundamentally change our systems every century.