Each system has its pros and cons. Daylight Savings time is not in accord with our circadian rhythm but there is reason to believe it lowers crime rates (less nighttime to commit crimes). Permanent standard time may not be as good for the economy but is better for sleep. The change in clocks causes chaos in a person’s system for a bit of time which can cause traffic accidents (which is obviously horrible but again one needs to think about possible health effects and how that affects mortality with permanent dst). However, as sleep expert Phyliss Zee was quoted in the Washington Post:
“Zee said her “heart sank” when she saw the news of the legislation passing. “I thought there would be more of a discussion, that it wouldn’t be as unanimous.” Of the three potential time systems for the country to be on — permanent standard, biannual switching and permanent daylight saving time — she said, the last is “probably the worst choice.””