Daylight Time started in WW2. People liked it. People like it when the sun sets later in the day. People can do things after work when the sun has not set. You can mow your lawn. You can garden. You can wash your car. You can drive home in the sunlight.
But of course you can do all those things anyway. It’s the difference between sunset at 9PM or 10PM, if you’re off work at 5 or 6 you still have hours of daylight after work.