The idea is roughly, "we want an easy way to talk about meetings and 'business hours' without constantly remembering the offset of all the timezones and doing t

The idea is roughly, "we want an easy way to talk about meetings and 'business hours' without constantly remembering the offset of all the timezones and doing the math". E.G. a normal person wants to know roughly: morning, mid-day, evening +/- offset. Durations also matter, so an oversimplified version that uses numbers to represent those values appeals to some. 0800, 1400, 2000 (or in lay person time 8am 2pm 8pm) However the further from the equator anyone is, the less those numbers hold ANY stability or reality over the course of a year. E.G. even in Seattle it barely gets to twilight overnight during the summer, and the length of a day from bright enough to do anything to too dim to safely do stuff is insane. https://www.timeanddate.com/sun/usa/seattle https://www.timeanddate.com/sun/usa/seattle (Take Jun 20: 1:43 of real night, nearly 16 hours of 'real day', and LOTS of practically day besides). Contrast to Orlando https://www.timeanddate.com/sun/usa/orlando https://www.timeanddate.com/sun/usa/orlando (June 20: 6:54 Night, nearly 14 hours of 'real day') Which is to say, DST doesn't really do much of anything, other than give very equatorial places a slightly easier way of making the evening brighter longer and making it MUCH harder to get to sleep on time with all that bright light.