Where I live, in winter, without daylight saving it would be dark until 9.30am or after in the mornings, meaning all the kids need to go to school in the dark, which is more dangerous.
Then at the peak of summer, it would probably still be daylight until close to midnight.
The closer you are to the equator, the less swing there is between the number of hours of daylight between summer and winter. Even between the very north of the UK and the very south there is an appreciable difference.