well actually it makes it lighter earlier in winter. It gives us more 'daylight' hours during the normal 'working' day so that we're not all wandering around in the dark.
EDIT:
Ok.. lets break this down. The clock changes are specifically for summer, to give us the most sunlight during the day in summer, hence why it's called British Summer Time (over here) and Daylight Savings time everywhere else.
So firstly, when the clocks go back for Winter, they are actually returning to the correct time, in summer the time is 1 hour ahead.
Today Sunrise was at 06:56am, if we were still on BST it would have been at 07:56am, meaning that it is now lighter, earlier.
It also means that it is darker earlier in the evening, but this is 'normal' time, not the +1 hour for BST.. there's nothing we can really do about the fact we only get jusrt short of 10 hours sunlight today, but I think having it from 7:00 - 17:00 seems about the right time to have it, given when everyone works/goes to school etc.