I remember reading somewhere that the whole switching time by an hour twice a year thing literally kills people every year.
The premise was that on the days right after the switch to the later sunrise schedule, sleepy people that were used to driving to work in daylight are now driving to work at night, and there's a statistically significant increase in traffic fatalities on those days.
My source has been lost to the sands of time, but it rings true for me.
My goal in life is to perform a us government sponsored cost-benefit analysis for ending "daylight savings time" and have it come out as an overwhelming positive.