The reason for daylight savings, as batshit insane as it sounds, is that it's
easier to authoritatively tell people what time it is, with a one-hour jump twice a year, than to tell people to change business hours twice a year for a better experience around daylight.
It's absolutely fascinating from a psychology standpoint.
My one big hope for when countries now stop doing the stupid clock change thing, is that people become a lot more flexible around business hours and school hours, and adapt a schedule that fits people.