Daylight Savings Time

Yes, It's that time of year again! As I'm sure most of you know ; here in the UK we change our clocks twice a year, An hour forward in the spring, (Spring forward) and an hour back in the autumn (Fall back). We get reminders and a lot of technology does it automatically (Mobile Phones and Laptops Etc. )
So when the clocks change why oh why do I hear people saying "it's 6 o clock but it's really 5" referring to the previous day. The frequency of this is disturbingly high, people don't seem to be able to let go, like it's to their advantage to remember, when in reality it's just time consuming and trivial.
I'd hate to see these people in another time-zone "OK I'm in china and it's 1am so really its 5pm"