Daylight savings time was originally not implemented to give more time to work, but in fact to give more time to leisure...
By artificially moving the daylight hours later, people essentially wake up in the dark, but have more light hours in the afternoon/evening. That gives them more time in the sunlight after working hours to use for leisure activities (the guy who invented it was a golfer - that's not a joke).
These days, governments try to justify DST by saying that it saves energy in the evenings (because more sunlight means less use of heating and lighting).
However, it obviously increases energy usage in the mornings. Supposedly the savings in the evenings outweigh the increase in the mornings.
We don't use it in South Africa, but I've often thought it would be nice to come home and have an exttra hour of daylight after work. And even in the mornings, the sun comes up early enough so that would still be daylight on my way to work.