The closer to the equator you are, the more sense it makes to remain on standard time. Your daylight hours are closer to 6am/6pm year-round and you don't really need to make any adjustments.

The farther away from the equator you get, the more sense it makes to go to daylight saving time forever. The sun rising at 4 in the morning *sucks* and it's better to have it up later to enjoy the evenings.

For example, in Seattle (47 N latitude), on the shortest day the sun rises at 7:56 am and sets at 4:19pm. No matter what you're doing, you're waking in the dark and coming home in the dark. On permanent DST this would be 8:56am and 5:19pm. You're still waking in the dark and returning home in the dark no matter what.

On the longest day, the sun rises at 5:11 am and sets at 9:12 pm. On permanent standard time this would be 4:11 am and 8:12pm. That is a VERY early dawn compared to DST time, and will wake up the night owls way earlier than necessary.

Compare to Honolulu (21 N latitude), where your dawn and dusk vary by about an hour at most. Day starts at 6 or 7 am, day ends at 6 or 7 pm. Stay on Standard time, it doesn't make a difference.