Abandon GMT?

Every winter, when the clocks revert back to GMT from BST (British Summer Time), there's always a chorus of people suggesting that the clocks shouldn't go back, so that there's an extra hour of sunshine in the evening. This year, the Mayor of London has gone one step further, and commissioned a poll (link now broken), which finds great support for the idea.

I think I'd probably agree with the idea, but it'd be quite a big symbolic move. After all, the Greenwich Merdian has historically been 'the centre of time' for the world. If we shifted permanently to BST, all the clocks in the Greenwich Observatory would be wrong...

If GMT is out-of-sync with the people's preferred match of clock-time to sun-time, then how did it get set that way in the first place? And do we really need to change the clocks to improve our lifestyles? Why can't we just agree to get up an hour earlier, start work an hour earlier, and go to bed an hour earlier? In fact, why do we need local time at all? Why can't the world just all use, say, GMT, and then shift their perceptions of the different hours of the day? So that it becomes perfectly normal to get up at 9PM, have lunch at midnight, whilst watching the day name change, and then go to bed at 11AM the next morning...

Hmm, maybe not.

Time. It's an odd concept isn't it?