When I'm working 6am-2pm I wish I was working 2pm-10pm. When I'm working 2pm-10pm, I wish I was working 6am-2pm. My ideal shift would be something like 10am-6pm just because I could do pretty much anything in an evening and it not be affected by work.
I can see why a lot of people would think that 6am-2pm is a good shift because they might just look at is as: they get up go to work and finish at 5:30pm and think that you get up go to work and finish at 2pm but there's a lot more to it than that. It's not just a case of getting out of bed. It affects your evening too much. There is only so many days you can get by on 5 hours sleep and even then, sleeping 12am - 5am is not the same as sleeping 2am - 7am. And it's not just about going out and having a drink etc, even sitting at home with the girlfriend a film might start at 10pm and you think to yourself "hang on, I'm getting up in 7 hours as it is and I'm about to start watching a 2 hour film."
Yes you might finish work at 2pm but those few hours of 2-5pm you are swapping for 9pm-12am and which is the most fun really?