You aren't actually GETTING it though, are you?
You go to work. You have to have the lights on at work. No difference. But you get off work, go home, and have 3 hours of daylight where you can go outside with your family, grill supper, play catch in the yard, the kids can go off to the neighbors house and play kickball in the back yard, and then it gets dark, so you have to go inside and turn on the lights, probably turn on the TV, etc.
Daylight savings time goes into effect, and shifts the entire day one hour. You get off an hour earlier in the solar day, and now you have FOUR hours at home to spend outside -- an extra hour you're not using energy to light the inside of your home.
No, you're not getting any more daylight, there's still X amount of hours in the day, and Y of those are naturally illuminated by the sun. What DST does is shift YOUR day to allow you to make better use of the naturally lit hours.