It seems to me the purpose is to shift an hour of daylight from the early AM (before work, when most of us are sleeping) to the evening (after work, when we're awake), thus "saving" it so it can be better spent.
Another benefit is energy savings. Instead of sleeping through that hour of daylight in the early morning, moving it to the evening means we have the lights on an hour less in our homes, at the ballparks, etc.
I enjoy DST very much, and was very glad to hear it's extended by two months in the Energy Bill. Those who prefer darkness -- e.g. criminals, vampires, and ladies of the evening -- might have a different opinion.
I prefer no messing with the clocks, and I also prefer night right where it is naturally. And I fit into none of the categories that you descibe. We don't need a statist solution to this non problem. Indiana was one of the few remaining bastions of sanity on this issue.
Do you sleep with the lights on? I don't!
Mucking forons in the fed gov.