warm take #2: clock times are a social tool for people who live in a place: the day starts around 7am and finishes around 7pm no matter where you are.
That's more useful for more people than the vanishingly small minority of the world who have to think about multiple timezones every day.
warm take #2a:
As an engineer, writing timezone-handling code is a privilege: you're enabling people to have a normal, predictable life in the place where they actually live; also you're saving literally billions of people from having to figure out what a bill/schedule/whatever means because it doesn't correspond to something that corresponds to their physical location. cease complaining.
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