Night is my favorite time to ride. It's so quiet and peaceful, and usually easier to see cars around. I like the slower pace. I think it's the best way to end a day.
Anything else you add for riding in the dark? I have to admit that I do hate the strobe-y headlamps many riders use (especially when they're on the trail and aimed at my eyeballs!) but I'm a huge fan of cheerful holiday lights and bobbles.