I agree that it is certainly not a big deal, but the truth is that most of the devices in my home which have a clock, adjust themselves automatically.
Some have their own "table", some simply sync with what's in the air (like a clock which syncs time with an atomic clock in Frankfurt.
There are 2 clocks in my household I need to manually set every DST change: an old battery operated wall clock and the BMW.. :-)
My Computers, Cell phones, House phone, Microwave, alarm clock, heating thermostat, X10 home automation device, they all take care of this by themselves. If none would do it, the 5 second excersize would certainly look different.....