Well I for one love daylight savings time.  The long sunshine lit evenings are one of the highlights of summer while gloomy early evenings are symbols of winter.  I have trouble understanding, but accept that there are people whose internal clocks are so intensely wired that they have difficulty adjusting to a one hour change twice a year that generally doesn't occur on a workday.  I can only suppose that these people have trouble whenever they travel.  As to the "costs" of changing clocks - that's a very lame argument among a host of others used to deprive us of one hour of daylight when most of us are awake as opposed to an extra hour when most of us are in bed asleep.