As a computer person, I really could care less when the sunshine is. I prefer my days to be exactly 24 hours. Not 24 hours +/- 1 hour.
Also, where I live there's a max of 16 hours of sunlight, and a min of 8 and a half. In the summer, it doesn't matter what the clock says, it's going to be bright when you wake up and bright when you go to sleep; so much sun. In the winter, it's most likely dark when you get up and dark when you go to bed, not enough sun that fiddling with the clocks is going to be really helpful anyway. Maybe there's a little more twilight in the morning the week after Halloween, and then it's back to morning commute in the dark. And it's pretty chilly, so while sure, I don't want to bike in the dark, I also don't want to bike in the cold, either, even if there is sun.
Also, where I live there's a max of 16 hours of sunlight, and a min of 8 and a half. In the summer, it doesn't matter what the clock says, it's going to be bright when you wake up and bright when you go to sleep; so much sun. In the winter, it's most likely dark when you get up and dark when you go to bed, not enough sun that fiddling with the clocks is going to be really helpful anyway. Maybe there's a little more twilight in the morning the week after Halloween, and then it's back to morning commute in the dark. And it's pretty chilly, so while sure, I don't want to bike in the dark, I also don't want to bike in the cold, either, even if there is sun.